Introduction
Use this guide to replace the home button in a 12.9" iPad Pro.
Parts of this guide were shot with a Wi-Fi model and as such the internals may look slightly different from the LTE model. The procedure is the same for both models except where noted.
Warning: the battery isolation method in this guide is outdated, and may result in irreversible damage to the battery pins of the logic board, effectively destroying it. If you choose to isolate the battery this way, heed all warnings and work extremely carefully. If you choose to complete the guide without isolating the battery, avoid using metal tools except when completely necessary (like when removing screws) to prevent shorting the battery and damaging sensitive circuit components
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Heat the iOpener for thirty seconds.
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Throughout the repair procedure, as the iOpener cools, reheat it in the microwave for an additional thirty seconds at a time.
DO NOT USE IN NON ROTATING MICROWAVE! It will pop a hole. I had it in for 45 seconds the first time. It wasn't very hot inside and I saw it started to leak on the paper towel I put under it. Just a fair bit of advice. I think I will just stick with the heat gun. Loud but useful.
I heated mine up for 30 seconds, tested, then again for 30 seconds. It felt adequately hot. Leaving it on the left side, per the instruction, for a minute did not loosen the adhesive. I ended up pulling the suction cup hard enough to shadder the old screen. Moral of the story, I don't think it gets hot enough safely to have an affect.
There is a clear problem here with the heating part using the iopener things....no details are given. Whoever is testing them needs to make it clear - What temperature does it need to be? And for which phone models, because they differ in what's needed. It's only £10-15 for a laser guided temp sensor unit, and the designers/repairers should have one of those already for doing these kinds of repairs. Explaining half a repair, is worse than not explaining at all :-(
All phones/devices differ it’s unrealistic and unsafe to put a exact time/temperature needed to soften the adhesive. It’s really quite simple you warm the device evenly and in a controlled manner just enough to enable pry tools and picks to begin separating. Best tool in my opinion but again this is because I have experience is a hot plate and heat gun both of which are used at nearly the lowest settings and I can handle flat palming the plate for almost 10 seconds I leave the device to conduct heat until approx it’s about 110 at most 120 ish this will be plenty to soften all the adhesive if any problem areas I use heat gun while prying. Again you need go slowly and learn with a throw away phone
If I may suggest include your microwave wattage so people can get an idea on time for there own
I agree with this.
I ended up using a hair dryer. That iOpener thing took forever.
30 seconds sure isn’t cutting it… 45 didn’t get the screen of my iPad air 2 to budge either… even after resting on the ipad for 4 minutes.
60 seconds in the microwave, the iOpener burst.
I’ll get a new one and try once more with heating it 45 seconds and repeat that for 30 minutes like others have said here. If that doesn’t work it’ll have to be the heat gun.
K
I can’t recommend the microwave. If the the iOpener becomes too hot, it bursts. Better put the opener in cooking water. Dry it and use it. Instead of an iOpener you can use hot/cool packs as well.
Great idea with using the heat packs. I will try that next time. Thank you
Collins -
Trust the directions! I forgot and left it in the Microwave too long and after 1 minute I had Mt Vesuvius - the iOpener burst and spewed the goodies out. The problem is, the Digitizer can be damaged by a hot air gun, so I had to tough out and remove the glue the hard way. I made it … with lots of patience! Tough lesson.
I also used a hairdryer. I used it on the low setting and I cut a piece of carboard to protect the rest of the screen. The iFixit tool and method is vert tedious and very time consuming in comparison. With the hairdryer method you can literally have the display apart in a few minutes. Using your other hand nearby the area you are heating it should be very hot but not enough to burn your hand. You only have to heat metal part of case near glass edge. If you have a cellular model then you need to be very careful because the black antenna area is plastic. So less heat and work your way up in adding heat just enough to separate around the area but not so much you melt the plastic!
iOpener was the worst part of the kit. Followed directions for :30 in microwave and took 4 trips to the microwave to loosen adhesive on left side of home button. I thought I was figuring it out and it was working well… even set a timer to wait 10 minutes between heating it up. Was on the right side and was on my 12th heat up when it exploded in the microwave. My only tip is that if you set it clear side up, as soon as you see any bubbles or boiling in the liquid, STOP! If you put a pot holder over the iOpener and press slightly to make good surface contact, that seemed to help. I finished heating with a “Corn Sack” that held heat better than the provided iOpener.
Mon iopener n'a pas tenu une réparation. Je ne vous conseille pas ce produit
Bonjour,
Nous sommes désolés que votre réparation ne se soit pas déroulée comme prévu. Il se peut que le produit était défectueux. Veuillez contacter notre service client support@ifixit.com (boutique américaine) ou eustore@ifixit.com (boutique européenne) en décrivant ce qui s’est passé.
Readers looking for temperature advice might check the comments of the previous instruction, as there are more there. I used an immersion bath to heat this to 180F and applied it to the device until the outside temperature of the opener read 150F with an IR thermometer. Removing the screen took very little force with this method.
Thank you for posting some actual temperatures. I have a heat gun with a very fine self-temperature regulation setting capability.
I will set it for 150-180 F, and use that to soften the adhesive.
Get a heat gun.
I followed the directions and heated my iOpener for 30 seconds in a 1000 watt microwave, and it came out at 160 degrees F, as verified by a infrared thermometer. A second heating about 15 minutes later in the micro and it came out at 190 degrees F. Plenty hot enough to soften the adhesive for removing the back on my S8. Based on the comments above I think people just need to use more patience.
I used various time settings. It got very hot. It would soften the glue but not a whole lot. If my screen had been intact and I was replacing something that was not a digitizer, it may have worked. A broken screen makes the process significantly more difficult. I ended up breaking the home button cable. Good bye TouchID…
It appeared 30 seconds were not enough, so I heated it more, by 5 seconds at a time until I got the right temperature about 70 degrees Celsius (measured with infrared pistol) to get the screen heated up to 60 C, the best for softening the glue. But the heat was quickly dissipating by the big aluminum back cover, so the best I got in 2 minutes of applying iOpener was around 45 C, which made the procedure difficult and having risk of breaking the screen. So I eventually abandoned iOpener and user a hot air gun with precise temperature setup. I set it to 90 C, which allowed me to open my iPad quickly and safely.
I, too, ended up using a hot air gun. I’ve done earlier versions of iPad before but the adhesive used on this IPad 5 A1822 was particularly difficult to remove.
Also, while the suction cup worked great when the glass is in tact, any cracks in the glass make the suction cup useless.
You need to remember here are different sizes of microwaves. I had the same issue.
Heating on a smaller unit I used 45-60 seconds. That worked but was time comsuming
Yeah, the iOpener didn't work for me either.... ended up using a hair dryer and that worked. The iOpener was too warm to soften the glue in my case.
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Remove the iOpener from the microwave, holding it by one of the two flat ends to avoid the hot center.
I did this repair. I used a hair dryer, I think it works better: gets very hot fast.
I did too, you get far more control and no expense on fancy equipment.
Readers looking for temperature advice might check the comments of the previous instruction, as there are more there. I used an immersion bath to heat this to 180F and applied it to the device until the outside temperature of the opener read 150F with an IR thermometer. Removing the screen took very little force with this method. I don’t know how much microwaves vary in heating consistency with these pads, but knowing how inconsistent the temperature of a bowl of plain rice gets in my microwave, I wasn’t interested in even trying to use it for this.
I vote for the hair dryer. The other methods work too but if you aren’t having any luck, switch to the hair dryer. While holding the iPad in my hand, I found that I am aiming the dryer at my finger at the same time and it gauges how hot it is. I stop when my finger can’t take it - maybe five seconds up close. Repeat as needed like I did.
If the maximum temperature for this iOpener is lower than the gadget glue minimum temperature, this device does not make sense.
I think the maximum temperature for this iOpener is below 100⁰C and most gadget glue minimum temperature is higher than 100⁰C. So the iOpener is useless for many opening steps in repair guides. But who knows because temperature range is not specified for this iOpener. -
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Fill a pot or pan with enough water to fully submerge an iOpener.
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Heat the water to a boil. Turn off the heat.
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Place an iOpener into the hot water for 2-3 minutes. Make sure the iOpener is fully submerged in the water.
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Use tongs to extract the heated iOpener from the hot water.
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Thoroughly dry the iOpener with a towel.
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Your iOpener is ready for use! If you need to reheat the iOpener, heat the water to a boil, turn off the heat, and place the iOpener in the water for 2-3 minutes.
What do I do if I don’t have a iopener?
Use a hair dryer
2 or 3 cups Rice in a sock, heat for about 2 minutes. But, I recommend the iopener.
When boiling in water you can put the iopener in a ziplock to keep it dry.
Even if you don't put in a ziplock bag, I found that the surface is mostly hydrophobic so drying it is very easy. I also didn't have tongs, but the bag is denser than water, so it sank and I attached clothes pins to the ends and was able to remove it with those.
2-3 minutes in near boiling water, then 2-3 minutes on my s10+ and it was super easy to cut the glue off.
I have a question, if I have a pan, and I have water, and a mean to boil the water, won't it be easier and cheaper to just use that.
Have you tried it? Water limits your temperature to 100℃, whereas 'pan on the stove' can easily get up to twice that. If your pan is even slightly warped, you'll have a few hot spots of direct conduction with convection everywhere else, heating things unevenly. Assuming you get the device up to temperature, how will you get it out without scratching it or burning yourself? After you're finished, do you really want to prepare food in the pan you warmed up adhesives and trace manufacturing substances in?
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Boiling something form fitting to heat your device with is a lot more foolproof, and not being foolish is easier and cheaper. Direct pan heating can work, but you are leaving yourself open to a lot more problems than just taking the safe route.
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Remove all packing tape.
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Peel any adhesive liners from the flex cables and press the cables in place onto the display panel.
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Fold and connect the flex cable in the bottom left corner of the screen.
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Don't peel and expose the perimeter adhesive until you've tested your repair and are ready to seal up the iPad.
manca la parte di montaggio del nuovo schermo ?
Ciao Roberto,
Per montare il nuovo schermo, puoi seguire le istruzioni dello smontaggio in ordine inverso. I punti con la puntina da disegno si riferiscono in particolare al rimontaggio.
Buona riparazione!
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Use an iOpener, heat gun, or hair dryer to soften the adhesive under the cable before you pry it up.
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Starting from the ZIF connector, use the blade on a halberd spudger or the edge of an opening pick to separate the home button cable from the adhesive holding it in place. Stop when you reach the home button.
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Remove the home button bracket.
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Scrape off as much of the old adhesive residue as you can, then clean it with acetone or high-concentration (90% or greater) isopropyl alcohol.
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Secure the bracket with hot-melt glue, superglue, or high-strength double-sided tape. Make sure the bracket is aligned correctly before allowing your adhesive to cure, or the home button will not click when pressed.
Would be really nice if the adhesive strip kit for the screen included the adhesive bits needed to secure the existing home button to the new screen (or a new home button to an existing screen).
One more thing about the bracket: you really need a strong adhesive when you put it back, so that pushing the button doesn’t dislodge it. If it doesn’t hold the button firmly, you can push the button out of its socket during normal use. Getting the bracket in and aligning it without accidentally sticking it in the wrong place or (much worse) sticking it to the fragile ribbon cable takes some very careful work.
This is an excellent guide, but I’d like to see maybe the first two steps of reassembly, showing how to do this correctly.
When replacing the bracket, a very slight difference in the replacement part caused the bracket to make the home button click all the time. The little white washer between the home button and the back of the glass was about 0.3 mm thicker than the original, and i had already superglued those parts together.
Fortunately, the playing card included in the kit is about 0.3 mm thick. I cut 2 small rectangles and superglued them to the feet of the bracket, so it would stand away from the home button. Then superglued the bracket on, and now it clicks perfectly. Hopefully I don't have any issues with the playing card delaminating as the home button wears, because I definitely don't know if i could get this ipad apart again (the first time was easier because the screen was already shattered).
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Compare your new replacement part to the original part. You may need to transfer remaining components or remove adhesive backings from the new part before installing. To reassemble your device, follow the above steps in reverse order. Take your e-waste to an R2 or e-Stewards certified recycler. Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
Compare your new replacement part to the original part. You may need to transfer remaining components or remove adhesive backings from the new part before installing. To reassemble your device, follow the above steps in reverse order. Take your e-waste to an R2 or e-Stewards certified recycler. Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
Annulation : je n'ai pas terminé ce tutoriel.
27 autres ont terminé cette réparation.
7 commentaires
Yes. If you take the iPad apart most of the adhesive on the screen won’t be usable again. You can use either the specific kit for your ipad Pro that iFixIt sells, or get a roll of “red” tape (probably between 2-5mm size) and cut out pieces for all four side of the screen. You will probably also need tape or glue (such hot glue or something like B-7000) for the home button, and the metal bracket that holds the home button, since the old adhesive tends to not work a 2nd time.
Some LCD Assemblies come with Adhesive pre-applied, simply peel and seal. :)
Otherwise, plan on running some double-sided 3M tape before commencing new LCD Assembly Installation.
TIP: B7000 Adhesive in the bottom left and right corners will help keep it in place moving forward.
Replaced LCD and reattached home button, everything works, but the home button is lose and trying to fall inside, like it's missing something that is suppose to be between the home button and the cover that sets over it under the glass. The cover is stuck to the glass, but there's enough of a gap that the home button wants to fall inside?
I have the same issue, haven’t solved it yet but here is what I’ve found so far:
The home button appears to have several pieces not just one, including: 1. black gasket, 2. white or space-grey ring (paper or plastic?) around the metal part, 3. The actual glass circle button with fingerprint feature, and 4. electronics layer behind it.
When I took the button off, and re-adhered the button, the glue or tape between No. 2 and 3. above started to separate. Not sure how to put these back together since so small.
The guide plus a few videos made this a painless experience. my only problems are the home button no longer recognizes finger prints and iPad no longer auto shuts off when lid is closed. Not a great result for the price.
Successfully completed this one but I must have damaged the home button cable during removal, I was very careful but it does say the cable is very sensitive, as it will not enable touch ID. Oh well, my iPad Pro works again, yay!
I didn't find this to be as hard as I had built it up in my mind to be; HOWEVER, saying that I need to say years ago I was the local Nokia service center in my town. But many years ago right after they got rid of analog times. Yeah. A classic installer/repairer mistake when starting something they haven't fixed or installed before is picking up the instructions, flipping through them; maybe even reading a section that is new-then tossing the instructions over the shoulder. "I got this." This usually comes right before something major gets broke. And I can tell you when you try to do it yourself and then mess it up horribly then take it to the repair shop. Well we called that "I can do it myself" syndrome and charged extra to put back together what they brought in in the box. Now knowing all this - I can't stress this enough because I am stupid, stupid, stupid. COVER YOUR SCREEN IN CLEAR BOXING TAPE AND READ ALL THE INSTRUCTION BELOW THROUGH TO THE END BEFORE EVEN ATTEMPTING THIS FIX. Take my advise.
windizy - Réponse
I didn't have an iOpener, so I used a wheat type heat bag. If you do this though, make sure you put a layer of plastic between your Mac and the bag, or you'll get condensation in places you don't want it.
Martin Gray - Réponse
I started out using the iOpener but switched to my wife's hairdryer. A heat gun or hair dryer proved to be much more convenient and is a time saviour. You can heat more and the glue becomes more fluid make the next steps with the opening picks much easier
Jan Van Puymbroeck - Réponse
I know this is obvious, but backup your iPad with iTunes before you start. I'd also turn off your passcode if you have one.
Laurie Higgins - Réponse
Ther first time you heat up the iOpener for this repair when its room temperature I had to heat it up for more than 30 seconds. I remember I had to heat it up for around 45 seconds. However, after that when you need to reheat it again during the repair 30 seconds will be enough.
Yousef Ghalib - Réponse
I used the wheat bag in a sensor microwave heating up to 65-70 deg C (155 def F).
ian cheong - Réponse
Get yourself a cherry pit bean bag the size of your iPad. Heat it, put the iPad on it for 3 to 5 minutes or so, reheat the cherry pit bean bag, again put your iPad on it. Then heat the iOpener and start working. The cherry pit bean bag will have to be reheated several times, but it will soften the adhesive so you have less problems with the iOpener
Tim Feyaerts - Réponse
The heating can be done very effectively (and quickly) with 3d printer heated bed. Make sure the bed is clean. Set the temperature to 60c, (130f ) and put the ipad face down for +/- 10 minutes. Repeat as needed throughout the “gentle prying” stages.
polleyphony - Réponse
The iOpener did not work at all for me.
I had to use a heat gun and bring the edges of the case up to ~200 degrees (used an infrared thermometer to measure) before the glue would weaken. This obviously superheated the metal frame, so I also had to wear gloves to handle the phone while prying the back off with the included picks.
Mike Jeanette - Réponse
Repair instructions worked like a charm. Had to be patient with the iOpener and getting the screen off. I tried repeatedly without success until shifting the suction cup a bit to the left side where perhaps the glue had loosened up a bit more.
Kyle - Réponse
The iOpener, in my opinion, is of no help. Many warnings to say “don’t warm it too much”, but the glue doesn’t melt if not warm enough. As a result, a complete waste of time and energy. In addition, too much liquid in it, so it doesn’t lay on the device on a sufficient surface. I took a hairdryer and it worked much much better.
laurentvidu - Réponse
I used an immersion bath to heat this to 180F and applied it to the device until the outside temperature of the opener read 150F with an IR thermometer. Removing the screen took very little force with this method.
breadandbits - Réponse
My experience. I was replacing the screen which had been cracked and a little shattered in some places. The iopener is pretty much useless, so was the suction cup. The suction cup would probably be more useful if I was doing something besides the screen. Also you probably want the clean the screen before using it so it can get good suction. I used a hair dryer on high for a couple of minutes at a time (someone on this tread suggested that). I used my exacto knife and a razor blade to get into the adhesive. First the exacto to get the initial cut, then the razor blade to go a little deeper. Could have probably just used the razor blade, but the exacto has a little more finesse. I got the razor blade in and a little under the glass then I used the picks to wedge in. I didn’t want to risk anything using the razor blade too much. Used tape to keep the shattered glass together.
trebor65 - Réponse
My experience pt2
Fortunately the shattering was mostly on the edges and most of it had adhesive on the back so it stuck together. Just take your time and work your way around following the guide to get the screen off. Have some goof off or goo be gone to clean the frame when putting the new glass on or putting the existing one back. (someone suggested that also, very good idea). Be careful of the LCD (you should know that). The cable on my LCD was pretty tight, so I propped it up while taking the cable cover off and when I put it back on I did the same thing. I just put a bottle on the battery and leaned the back of the LCD on that while attaching the cables and putting the screws back on the cover. Also be careful with the home button and the bracket on the back of it. I had enough old adhesive on left on the bracket that it stuck back to the new glass fine. So far only 12 hours in, so we will see how that holds up when the kids get at it.
trebor65 - Réponse
Another alternative if you do not have the iopener is to use a bed time hotwater bottle. Do not over fill it though. Just put enough hot water in to support the phone while you work around the adhesive.
I use both the hot water bottle and iopener together on Samsung's. It makes life easier
gazza667 - Réponse
I followed the directions and heated my iOpener for 30 seconds in a 1000 watt microwave, and it came out at 160 degrees F, as verified by a infrared thermometer. This allowed me to separate the last bit of the back of my Samsung S8, which was already coming off due to a swollen battery (hence the reason for the repair).
Dennis - Réponse
Hallo,habe den Akku erfolgreich getauscht.Doch seitdem gibt es bei Telefonaten eine Rückkopplung für den anrufenden.Bei mir ist alles normal.Woran liegt das?Mfg
Manu R - Réponse
If you follow these instructions, you will crack your screen like I did. Heating the iOpener for 30 seconds, using it to melt glue, then waiting 10 minutes to reheat is useless. The iOpener can be used to maybe warm the glue on whatever side you aren’t working on. You need a hairdryer and/or a heat gun to melt the glue and separate the glass from the iPad.
Anyone want to buy an old iPad with broken glass and a dead battery?
mpulliam - Réponse
Not everybody has a microwave. You should provide a target temperature for the iOpener and instructions for a conventional oven, or pot of warm water, or whatever. Although I will probably use a heat gun …
Esmond Pitt - Réponse
Three times heating opener and no luck. Tried pressing down gently on opener with a towel, and the opener broke. Wondering if I now replace table mats, fancy table cloth, etc. or will this stuff wash out.
Not impressed so far. Maybe the hair dryer next.
doug - Réponse
I support the comments about the iOpener. Everyone has a hair drier, FHS, so get a cheap IR thermometer (£18) and blow heat until the area is 60+ deg C. Still takes w while, and getting the screen off is v scary, but just add more heat if you feel resistance.
The rest of the kit is good, esp the magnetic screwdrivers.
Richard O'Brien - Réponse
No, everyone does not have a hairdryer. Some of us don’t even have hair. Thank goodness I already had an IR thermometer, though.
nin10doh -
#### WARNUNG WENN MINIMALSTER SPRUNG IM DISPLAY IST FUNKTIONERT DAS NICHT!!! ######
Hatte einen winzigen, minimalen Sprung im Display. Ich dachte es könnte gehen, weil der Sprung “abgeschlossen” war. Er hat in einer Ecke ein winzige Glasteil rausgeschnitten. NEIN! Geht nicht. Habe alles mit viel Geduld dem iOpener und einem Föhn erhitzt. Es ist trotzdem sofort über das komplette Display zersprungen…
T z - Réponse
I’ve started with iOpener but changed very quickly to a heatgun. That was more efficient.
Mizzoo, s.r.o. - Réponse
I could not get the iOpener hot enough to melt the glue on my ipad 6. I heated for 45 seconds once and it was boiling and it still never worked. Thank goodness contributors mentioned using a hair dryer. Using an 1700w hair dryer on high did the trick to get the screen off. Still took some time and the case got pretty hot but be patient. It took twice as long and a lot more patience to get the battery out.
Randal Haufler - Réponse
I have an Ipad with touch screen issue, if i replace this part it should be Ok?
janderson martin - Réponse
WARNING - DO NOT MICROWAVE ON A METAL MICROWAVE RACK
The metal microwave rack can heat up and melt through the iOpener cover letting the contents leak out.
Not a big issue for me as I have a heat gun and used that instead.
Run Up A Tree - Réponse
I opened my iPad with the iOpener. Be patient! It may take quite a bit longer to it the iOpener in the microwave than it says in the guide. My microwave can only do 800W and I had to put the iOpener in several times (maybe a total of 90-120 seconds). I recommend that you have the transparent side up an watch the bag carefully. As long a the bag doesn't bloat up and the liquid doesn't start bubbling you should be fine. But I recommend to take the iO out from time to time to check it. (More comments in Step 6.)
marcelflueeler - Réponse
I gave upon the I opener and used a hairdryer. (Fixed an iPad 6)
Tom Weber - Réponse
iPad mini gen5. I used the iOpener. My microwave is 1200w with carousel. 30 sec got the iOpener to 155ºF. For the 2nd heating, after 10 minutes sitting, the temp was still around 125º so I only cooked it for 15 sec. Not enough increase so +5 sec more which me to 165-170ºF. This should be considered ballpark info because who knows the real output of the various microwaves and the quality of the IR tool used to determine temp.
To successfully open my iPad mini I applied the iOpener twice to the left edge and twice to bottom. & once to R edge. Using the suction cup was difficult for me (I'm in my 70's so my hands don't work too well anymore). I had trouble holding the guitar pick and slipping them in (at an downward angle). In the end, sliding my thumbnail along the edge opened it very slightly and allowed the pick to get into the gap. I marked the ends of all my picks with a sharpie pen for the recommended 2mm insertion to avoid going in too deep. To get the screen open it took me approx 1 hour.
jharrison - Réponse
Can’t you just use a hair curler instead?
Aspect22 - Réponse
A hairdryer or heat gun works, if heating is kept around 100 deg C (212 deg F - boiling point of water). But… heating this way is cumbersome. Using a hotplate, set to 100 deg C, measured carefully with a fairly inexpensive IR gun, is simpler and easier, if you can afford the hotplate (I used an old pancake griddle with a thermostat knob). It works great for phones, setting them face down for 2 minutes, then picking them up with insulated gloves - cheap, wool gloves work fine. This may require repeated reheating to continue the display removal, but its much simpler.
Because its almost impossible to repeatedly lay an iPad/tablet on the hot plate, I propose an alternative.
Initially lay the larger iPad/tablet, face down, for 2 min, to heat all of the adhesive surrounding the display. Lift and begin the picking process describe in your removal steps. Then lay an iOpener on the hotplate for 2 min (already set to the exact, desired temp) to bring it to working temp for the remaining operations.
Dan Smith - Réponse
For iPads in particular, it makes sense to construct a simple, aluminum window frame, laid on a hotplate (see my comment above) that only touches the edges of the display, heating only the adhesive underneath. This prevents general heating of the entire device. Four strips of aluminum, placed together as a frame, would be the simplest and allow variations for all devices - envision it as a pinwheel of strips, radiating outward. Use it for any size device.
Dan Smith - Réponse
BTW, always read all comments at each step. New, and possibly useful, suggestions appear on occasion that can be crucial.
Dan Smith - Réponse