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Remove Paint With Infrared Heat (and without chemicals!)

Remove Paint With Infrared Heat (and without chemicals!)
This Instructable explains how to build an infrared paint remover, which is cheaper, safer, and more environmentally friendly than normal paint removal chemicals.

Here's a video of this project:


This should cost you ~ $50 to build (commercial versions cost ~$400). If you're going to strip any significant amount of wood, this should also be cheaper than buying chemical removers.

I sell kit and finished versions of this and most of my other projects on my website, dirtnail.

Additionally, this method should be safer for you and the environment than using conventional, toxic paint removers.

Thanks to the dude at Ocean Manor House for building this and sharing his plans: my version is at best a slight improvement and more likely a downgrade from his:-)
 
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Step 1Gather Your Materials, Tools

Gather Your Materials, Tools
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The big decision to make in getting your materials is if you'd rather build an enclosure or spend ~$40 to buy one. The Ocean Manor House guy bought an enclosure and modified it to make it portable, and I built my own. His looks correspondingly higher-quality:)

For my way, here are the materials you'll need:
-A 120-volt ceramic infrared heater: I used this 900 watt unit, and it cost ~$40 after shipping. The $400 commercial units use an 1100-watt unit.
-A higher-gauge ac cord: I used one from an old microwave. make sure it's capable of handling however many watts you will be pumping through it (remember watts = volts * amps). for my project, I need a cord that will handle 900 watts or a cord rated to handle 900 / 120 = 7.5 amps of 120-volt AC.
-Electrical tape + wire nuts + thin-guage wire. For a higher-quality, more durable build, replae all 3 of these w/ high-temperature, nonconductive tape.
-A paint roller brush, sans roller sponge thingy.
-Some type of metal to build the reflector out of. I suppose this is optional and really just about increasing the efficiency, but it's definitely a good idea. I tried aluminum cans cut in half from top to bottom of can, and this metal was too thin.
-Rivets and riveting tool (optional), to better secure your improvised reflector to your hacked-apart paint roller
-An extension cord, so that you can remove paint further than the length of your power cord from an AC outlet:)
-Paint scraper, to remove your loosened paint.

Tools you'll want are:
-Wire stripper. I heart my automatic wire stripper, although any reasonably sharp knife would do in a pinch.
-Metal cutter capable of cutting the metal used for the reflector (and the wire). I used tin snips.
-A grinder or other tool to cut through the rolling part of the paint roller.
-Drill or other tool to make holes in the metal used for the reflector.

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15 comments
Sep 17, 2010. 7:51 AMsc7923a says:
I'm kind of a build you own power tools noob...if I do this, or buy one of your kits, and don't do anything stupid like leave it sitting on a stack of newspapers or run the cord through a puddle of water, are you relatively confident that I won't burn my house down/get electrocuted? Not for legal purposes and I won't hold it against you if either of those things happen, heaven forbid. Just for my own peace of mind :)
Sep 17, 2010. 10:06 AMsc7923a says:
Cool! I checked out the other guy's website where you learned how to do this, and I think with that in hand, I can persuade my fiance that it will be safe enough for us to not die. How much are your kits?
Nov 14, 2009. 12:36 PMDWRead says:
I've recently learned that a heat gun will release any LEAD in the paint into the air! This affects 40% of all homes; lead was not banned from paint until 1978.

If your house was built before 1978, the safest course is to assume that lead is present and follow lead-safe practices. No sanding (unless the dust can be contained) and definitely no heat guns.

Infrared paint removers are fine!

P.S.
Your house can be tested for lead, but that can prove expensive in more than one way. Regardless of the results, the fact that you tested for lead could make your house unsaleable. And you are required by law to disclose the test and results to potential buyers. 
Aug 5, 2010. 2:37 PMmythgarr says:
Just to clarify DWRead's above statement - infrared paint removers CAN BE HAZARDOUS. If your home was built prior to 1978 you should test that any home-made infrared remover is only heating the paint to 400-600 degrees. Using an over-powered or several IR sources could heat the paint to vaporization temperatures (800 degrees Fahrenheit or above). Infrared paint removers are certainly safer than heat gun removal methods since they heat both the paint and the surface, but be careful. Lead poisoning can kill.
Mar 14, 2010. 11:47 AMkivitoa says:
the main problem I encountered with sanding the paint is the stickiness of the paint. your sand paper will become useless in couple of minutes, especially if it is old school paint that contain resins. the only way is to remove it with heat. but another problem is too much heat with heat gun. you'll melt the oils and resins that will impregnate the surface layer of the wood. that is again tuff on sand paper, since it gets sticky and looses it's abrasiveness in minutes.
infrared emitter works in its gentle way that omits before mentioned problems.
Jun 25, 2008. 9:56 AMDWRead says:
Oh, wow, wish I'd seen this last week. My new heat gun was just delivered. Tested it out right away and...the smoke alarms tripped, even though there was no smoldering or smoke. (I spritzed the area with water, just in case.)

I figured I was using it incorrectly, so I looked on the 'Net and learned about infrared paint strippers.* Removes paint using lower temperatures than a heat gun, and it's quiet, to boot.

*From http://www.projo.com/home/content/lh_heatgunsafety_05-20-07_I45J2E4.11e01d1.html
"• Infrared paint strippers. Tools using infrared heating elements can remove paint and varnish at lower temperatures than many heat guns. The rectangular devices, which can be bulky to maneuver, radiate heat between 380 and 750 degrees. (Some wood ignites at 745 degrees.) These tools also have drawbacks.

Doug Rosner, owner of DHR Construction, near Frederick, Md., uses the Speedheater. It can scorch wood “if you leave it on an excessive amount of time,” he said. Those dark marks remain visible under a clear finish. The devices cost about $400, he said. (For details, go to www.speedheatersystem.com.)"
May 23, 2008. 3:33 PMLinuxH4x0r says:
$50!!! Just get a heat gun for $15. Put a shirt on, and remake the video, its sideways. Other than that, not too bad
Jun 25, 2008. 9:43 AMDWRead says:
Heat guns use higher temperatures = greater risk of fire
May 23, 2008. 10:57 AMtheRIAA says:
900 watts x 20 hours = good for the environment?

why not just power sand and chisel it off? it would be faster. you'd even have enough time to give it a couple passes with a random orbit sander
May 23, 2008. 4:14 PMtheRIAA says:
that makes since i guess. But i would still rather use a sander for any size job. ive sanded my entire log cabin looking house with sanders. The entire house was coated in what I can only assume was a hundred gallons of tree sap mixed with brake fluid (it looked horrible). I stared with a 6" wire brush on a circular sander (at full speed) and ended with 800gt random orbit sander for a mirror finish wood grain to stain... took 4 summers to complete. paint is a different story, but while i watched the video i was just imagining how i could strip that paint off at 20mph with a circular sander and some medium-fine grit disks.
May 24, 2008. 8:17 PMjcpoczatek says:
I think where this kind of tool is of most use is where it's difficult to sand a non-flat surface. I've been thinking about making one of these for a while to get the paint off of some moldings and a mantle. It would be horrible/impossible to sand them. And a wire brush or a soft pad on your sander would start to remove wood before it got all the paint.

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