Heating Pad/Mat - Page 1
Forum section: electronics / projects

author: AMK5405
author_rank: Newbie
timestamp: March 10, 2019, 04:02:14 pm
content: I am trying to create a heating mat or pad. My requirements are 110V/220V, 140/150 degrees F, and the largest would be about 36"x40" and the smallest about 24" x 24". Can be rectangular if needed, cut to a specific shape is nice. I have been looking at things like under floor heating, and carbon fiber. The problem is with carbon fiber is the resistance isn't less than 15/20 AMPs. Carbon fiber cord works but winding a cord up and down and providing consistent heat is next to impossible. Any ideas? TIA!

author: Sceadwian
author_rank: Unknown
timestamp: March 10, 2019, 04:09:07 pm
content: Use the bed heaters from 3D printer, you'd have to use more than one to get that area but the same sites that sell the 3D printer bed heaters will possibly have one's of the size you're looking for. A little bit of Googling based on what you find from 3D printer bed heater sellers should get you almost exactly what you want.

author: Cnoob
author_rank: Regular Contributor
timestamp: March 10, 2019, 04:23:06 pm
content: https://www.ebay.co.uk/itm/220V-PTC-Heating-Element-Thermostat-Heater-Plate-For-Components-Preheating-SS/252892979803?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D20140122125356%26meid%3D658a0397885b4ade9a47e2bc56c0038b%26pid%3D100005%26rk%3D6%26rkt%3D9%26mehot%3Dpp%26sd%3D183505486779%26itm%3D252892979803&_trksid=p2047675.c100005.m1851Would these above be any good?I have some lower voltage ones for a hot plate.

author: AMK5405
author_rank: Newbie
timestamp: March 10, 2019, 04:43:20 pm
content: Thanks for the ideas guys! Should have mentioned this is for like a car windshield, baking a substance onto the windshield. So, the material needs to be flexible.I have been looking athttps://www.ebay.co.uk/itm/50CMx3M-220V-Far-Infrared-Floor-Heating-Film-Crystal-Carbon-Fiber-Underfloor-Hea/282914296671?_trkparms=aid%3D333200%26algo%3DCOMP.MBE%26ao%3D1%26asc%3D56580%26meid%3Da161244003fe416fbaba59a29073df21%26pid%3D100008%26rk%3D2%26rkt%3D9%26sd%3D252892979803%26itm%3D282914296671&_trksid=p2047675.c100008.m2219https://www.alibaba.com/product-detail/Infrared-Heating-film-PTC-Electric-Floor_60826076489.html?spm=a2700.7724857.normalList.1.4328bdafq2NZFIAnd some carbon fiber cloth...

author: Sceadwian
author_rank: Unknown
timestamp: March 10, 2019, 06:17:07 pm
content: Infrared heaters (several) aimed at what you want to heat might work better. Glass is opaque to IR so you should get even heating.

author: coppercone2
author_rank: Super Contributor
timestamp: March 11, 2019, 04:11:47 pm
content: I think a sick solution would be to put heating strips on copper plate thats soldered to copper mesh and coated with thermally conductive flexible polymer.With a insulator on topPu foam cut into strips like plate mail armorMc master sells heating strips that are adhesive backed. They are thick nichrome foil like a maze embedded in rubber. Would be a heavy skirt and press into stuff good

author: soldar
author_rank: Super Contributor
timestamp: March 11, 2019, 11:32:16 pm
content: Quote from: AMK5405 on March 10, 2019, 04:02:14 pmYou cannot set the temperature except by providing more than enough power and a thermostat.I have built countless bed electric blankets / pads. All you need is nichrome wire and a sewing machine and you can make the size and shape you choose. I did not provide any thermostat and I made them powerful so I could get into a toasty bed. Spread out they worked fine but one day it was crumpled in a corner under the blankets and it started a fire.Quote from: AMK5405 on March 10, 2019, 04:02:14 pmI do not understand what this means. Why don't you use nichrome wire which is the standard for these things?

author: daniel444
author_rank: Regular Contributor
timestamp: March 12, 2019, 06:33:37 am
content: can you use a hot air gun???

author: martin1454
author_rank: Regular Contributor
timestamp: March 12, 2019, 06:53:19 am
content: Look up Keenovo heaters, they have both stores on Ebay and Aliexpress, and sells tons of different size heaters.

author: beanflying
author_rank: Super Contributor
timestamp: March 12, 2019, 07:39:19 am
content: Go down the path of Drum heaters. Most of the big guys in Element or Temperature control will be able to make you a custom one. In particular the silicone drum heaters would suit your glass application due to the flex.Omega not for any reason other than their content is accuratehttps://omega.com/subsection/drum-heaters-tank-heaters.html