newbie with some questions

[captan42]

Hey all, hobbyist here, I've been on these forums for some time and reading up on stuff. I got a PC gun a couple months ago wired up my garage for 220 and got a clean used oven to shoot parts in. I've been looking around these forums getting lots of tips which have helped me out greatly in shooting my first couple of parts.

A few questions though, how do you guys handle hot parts that you've masked off and it's flowed out a bit? Do you completely let it cool down and then unmask then bake it till it's cured? How would you pull the tape/foil off without disturbing the flowed powder (obviously depending on size/shape of part)? Any tips tricks are appreciated!

Secondly I need to build a good PC spray booth, I'm just going to make it out of 2x4's and some type of smooth plastic or plexiglass, I'll put in a filter with a box fan on the backside to create airflow past the workpiece. I know it's beneficial to ground a piece of metal behind the part I am shooting in the booth to collect charged powder but what is everyone using as a ground? I'm doing this in my garage with a concrete slab.

Lastly, my oven is a electric house oven that is quite old but is in fantastic shape. Has anyone made something for hanging parts to the top of the oven (inside) or do you just put a rack on the top rung and hang parts from there?

Thanks for any input!

[FigureLLC]

Hey all, hobbyist here, I've been on these forums for some time and reading up on stuff. I got a PC gun a couple months ago wired up my garage for 220 and got a clean used oven to shoot parts in. I've been looking around these forums getting lots of tips which have helped me out greatly in shooting my first couple of parts.

A few questions though, how do you guys handle hot parts that you've masked off and it's flowed out a bit? Do you completely let it cool down and then unmask then bake it till it's cured? How would you pull the tape/foil off without disturbing the flowed powder (obviously depending on size/shape of part)? Any tips tricks are appreciated!

for masked items, let the powder gel, then remove the part from the oven and remove the mask. if you wait for it to cool, you'll probably get cracking/chipping at the mask line. if you remove it warm it leaves a cleaner line, and when you put the part back in the oven, the powder will continue to flow out a bit more and round itself off at the line... kind of a self-leveling thing.

Secondly I need to build a good PC spray booth, I'm just going to make it out of 2x4's and some type of smooth plastic or plexiglass, I'll put in a filter with a box fan on the backside to create airflow past the workpiece. I know it's beneficial to ground a piece of metal behind the part I am shooting in the booth to collect charged powder but what is everyone using as a ground? I'm doing this in my garage with a concrete slab.

i built ours using 2x4 metal studs and this white hardboard stuff. i found it at home depot in the bathroom section (it's supposed to be used for shower walls). it's slick (easy to clean), white (good for light), cheap ($11 for a 4x8 sheet, i think i paid), and easy to work with. you can try the box fan/filter idea, but i expect you'll be disappointed. for grounding, you can have a metal rod or hanger, and clip your ground lead to it. if you're using clean metal hooks, the ground should carry.

Lastly, my oven is a electric house oven that is quite old but is in fantastic shape. Has anyone made something for hanging parts to the top of the oven (inside) or do you just put a rack on the top rung and hang parts from there?

if it's old and was free and its now dedicated to powder, molest it however you want. drill holes in the top, bend up the racks, whatever works.

Thanks for any input!

hope this helps.

[captan42]

Thanks LLC, how do you remove the masking while the part is still hot? Sorry if this a dumb question but only thing I can come up with is oven mitts and I'm sure that would disturb the powder.

[ty1854]

I use a dental pick to hook the masking and then lift it off. The tape itself is not very hot and once you get it started you can remove it all by hand. Just your standard purple nitrile gloves with provide some protection from the heat. You will also need to practice removing the masking as there is a technique to removing the tape. I pull the tape straight back on itself and this seem to stop the surrounding powder from cracking or lifting. Good luck!

[captan42]

Thanks, hopefully I'll shoot a few more parts this weekend, need to finish building a spray booth though

[XaboveX112]

I also use an electric house oven... I took the rack and using self taping sheet metal screws secured it to the top of my oven so its 1/4 of an inch from the upper heating element... This has worked great for hanging parts...

I also took the other rack that came with my oven and mounted it to a 2x4 shelf i built above the oven for a drying rack... here is a picture of my drying rack i dont have one of the oven but its pretty simple...(dont mind the speaker wire behind it)


I took 3/4 inch self taping sheet metal screws and drove them in about 1/2 an inch so the remain 1/4 inch is holding up the rack in all 4 courners..

[captan42]

I also use an electric house oven... I took the rack and using self taping sheet metal screws secured it to the top of my oven so its 1/4 of an inch from the upper heating element... This has worked great for hanging parts...

I also took the other rack that came with my oven and mounted it to a 2x4 shelf i built above the oven for a drying rack... here is a picture of my drying rack i dont have one of the oven but its pretty simple...(dont mind the speaker wire behind it)


I took 3/4 inch self taping sheet metal screws and drove them in about 1/2 an inch so the remain 1/4 inch is holding up the rack in all 4 courners..

This was my plan of attack, I just want to make sure that drilling holes in the interior oven wouldn't cause issues for heat loss or something. Thanks for the picture that's pretty inovative