View Full Version : powder coating kits
03-22-2006, 12:31 AM
i want to powder coat some parts does anyone know how to do this at home ...
-i have heard of a kit from craftmens that you spray on and bake in a oven...for $50
(popular mechanics magazine)
03-22-2006, 12:48 AM
I've had success with the ones that Harbor Freight has. It's like 60 or so when you catch it on sale (like every other week). What I did with it worked fine. Now the oven is maybe a bigger concern- you're not supposed to use it for cooking food in anymore. Fumes or something I guess. Little cheap toaster ovens work for smaller parts, as long as you have a means of controlling the temperature (mine had a thermostat, this could be as simple as cracking the door open a little). I used a bigger oven one time in a house that was gonna be torn down, worked fine but will probably ruin the oven (for food use, shop use will be fine).
03-22-2006, 12:55 AM
[This message has been edited by pgmrdan (edited 03-22-2006).]
03-22-2006, 08:05 AM
I use the Eastwood system. Works well enough ,even though it is a bit underpowered.
It is verymessy though - powder will be all over the place and teh oven will ruined for use as anything but a powdercoat over.
I used an old oven that was given to me by a friend that replaced his range at home. Keep it out in the shed where the wife never see's it, so it works well.
You can get some fantastic results with these home kits. Just take your time.
03-22-2006, 08:13 AM
Had these bookmarked for future ref.
paul j smeltzer
03-22-2006, 08:17 AM
I have been using the eastwood unit for about 3 years. I bought an elrctric oven from the city schools system for $6.00 and it woorks fine. I have used a variety of colors and have had very good results except with white. Paul
03-22-2006, 08:48 AM
I use powders from www.Columbiacoatings.com (http://www.Columbiacoatings.com)
Their super gloss white works great! Smooth finish and good color.
Columbia's powders all seem to work a lot better than Eastwoo.
03-22-2006, 08:54 AM
THE MOST IMPORTANT THING TO CONSIDER IS DO NOT
USE A OVEN YOU USE FOR FOOD. Have know somebody that did it in the Households electric oven. Not even getting in to the toxicity of the stuff, the smell never will go away. you can pick up a cheap electric stove and use the oven. http://bbs.homeshopmachinist.net//biggrin.gif Not to mention the other halfs outrage about screwing up her toy the oven. Which needed to be replaced with better one with more bells and whistles. LOL The Eastwood and Harbor Frieght ones are the same ones. Eastwood does have a amzing amount of colors to select from and in small amounts compared to some other sources.
Been there, probally broke it doing that
[This message has been edited by PTSideshow (edited 03-22-2006).]
03-22-2006, 02:33 PM
Is there any kind of Bondo that will take the 400-degree cure temperature?
03-22-2006, 03:01 PM
paul j smeltzer
03-22-2006, 03:23 PM
Thanks for the info on the white. I have purchased a number of colors from a local powder coater. I have tried his white, Eastwoods white, with the same results, poor. Thanks again Paul
03-22-2006, 06:17 PM
Try Caswell Plating
No affiliation, no personal use just a lot of reading.
One other note DO NOT use a gas oven for curing powder coating. It is reportedly potentially spectacular.
3 Phase Lightbulb
03-22-2006, 06:55 PM
I have the HF powder coating system and I also ordered the HF powder coating oven last week so I'll post a review when I get the oven.
I was just going to get a dedicated regular oven but then I looked closely at the HF oven and it seems more optimized for powder coating with 3 heating elements and a circulating fan inside so we'll see.
IODICK won't like it, but I'll post a review after I get them.
03-22-2006, 08:55 PM
A putty called "Lab Metal" will handle the 400F cure temps. There are two types though; a normal and a high temp version. Obviously, you'll need the high temp version.
Made by Alvin Products. Great stuff.
See www.alvinproducts.com (http://www.alvinproducts.com)
03-22-2006, 10:17 PM
Once you buy a powder coating system, these guys will sell you small quantities of powder.
03-22-2006, 10:18 PM
in this case, swmbo's name is mom...
03-23-2006, 01:18 AM
I also have used Caswell for my powders, only have done white and it turned out great. I'll try to put up some pictures when I get done with it (Doc will appreciate, it's a paintball gun http://bbs.homeshopmachinist.net//smile.gif). Caswell also sells the lab metal stuff.
03-24-2006, 09:21 PM
Here is my experience with power coating it started a couple years ago. Actually it started about 25 years ago when I built a replica of 1952 MG TD. Anyway I noticed that the MG was starting to show its age and I decided to clean it up a bit and of course one thing led to another. I was going to get the chrome parts replated, but because of the EPA chrome platers are all but extinct and the few that are left are now “custom specialist” and charge accordingly. I considered doing it myself but decided against it.
I then started looked at powder coating as an alternative. Then one day while visiting Harbor Freight I noticed that they had a powder coating gun on sale, obviously I could not past that up. Also at that time I was helping a guy who was developing a digital temperature controller for small pizza ovens. So while **testing** his controller I used the oven to cure my powder coated parts. This worked well for small parts but the oven was not big enough for my radiator grill and some of the other large parts. So naturally the only thing to do was I had to make my own bigger oven. I now can coat anything that will fit inside a 2ft. square cube and on top of the oven I incorporated a spray booth to do the actual powder coating. To make spraying all sides of a part a little easier I hang the part from a shaft of a gearhead motor to slowly spin it as I am spraying.
Anyway powder coated all the chrome parts with a chrome power coat. It really looked good, however if it is going to be exposed to sunlight chrome powder requires a clear topcoat to protect it from the UV. Unfortunately the topcoat killed off some of the shine, not good, as a result I wound up using a transparent gold over it, which looks kind of neat. Then of course the paint had some chips so I had to repaint it. (Kelly green metalflake) But then with nice new shinny paint job the interior did not look too good, so I ripped it out and replaced all the carpeting and reupholstered the seats and door panels. Also it goes without saying I “had” to replace the gauges and rewired the dash using vintage style gauges.
So here is what I learned. The little cheapie gun works pretty good on small projects although you probably would not want it for a large-scale professional job. The same as with regular painting, your spray booth needs good lighting AND an exhaust blower catch the overspray to get rid of it. The oven needs to warm up your parts to 400 deg. And cook them for 20 minutes. (Using friend wife’s stove is a definite no-no.) Again the same as with painting you need to thoroughly clean the parts, I sand blasted mine. All oil & grease must be removed.
Along that line pot metal and cast parts require special attention, just cleaning and sand blasting is not enough. It seems that when you heat a pot metal or case parts all sorts of junk is boiled out of its pours, this makes for numerous little blisters and pock marks plus lots of cussing. The cure is to “preheat” the part to first boil the crud out and then powder coat it.
It’s not hard to get a good-looking finish that will be tougher and more durable that paint. But start out with solid colors, as they are easier to work with then the transparent overcoats.
I have been buying my powder from either Eastwood or Caswell Plating. Eastwood sells smaller quantities and has package deals that will give you an assortment of colors. Caswell sells minimum 2 lb. cans but their prices are better.
A couple of things -
First, before spending $$$ for the electric oven in Harbor Freight, I suggest checking Craigslist, particularly the free section. You never know, there may be somebody giving away/selling cheap an electric wall oven.
Second, I keep hearing that the Horror Freight setup is both better and cheaper than the Eastwood setup. Note I have experience with neither, but it is something to consider.
Third, there is also the Sears Powder coat gun, which doesn't require a compressor. It is however expensive at $150, but it doesn't require a compressor.
Fourth, in case you want to powdercoat something large, but don't wanna shell out $6 grand plus for a large oven, here's a link (http://www.powdercoatoven.4t.com/) to a site that details building large powdercoat ovens.
Fifth, if you do buy a powdercoat setup, stock up on quantities of powder you expect to use alot of, like gloss and flat black, and gloss red, blue and green. You'll save money in the long run.