| Gallery, Projects and General > How do I?? |
| Photo Resist |
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| John Stevenson:
The spray stuff in cans. How can it work, not how does it work. Can I clean a plate of brass up, spray it with this stuff, let it dry, then burn the etched areas away with a laser the drop it into the ferric chloride ? I need to get some quite small letters to stand proud of a brass sheet. Don't mind buying a tin to try it IF it stands a chance of working, alternative is to use a spray can of paint and laser the etched area away. Anyone done this or seen web sites where it has been done, need to use a laser as all the files are in the laser format. |
| awemawson:
John I've used it years ago. It's mainly sensitive to uv light. Make a mask, expose to uv, develop it (developer is usually caustic soda) then rinse in water..etch in ferric chloride. You can get positive and negative working spray. I found getting an even spray coat a pain and went over to precoated fiberglass copper clad..still got the uv exposure box and a small 'lab line' series of bubble agitated tanks. |
| John Stevenson:
Want to miss the developer stage out if I can as the files are already in the laser, might try paint first as I have it. BTW sent you an email tonight over LED lights. |
| RobWilson:
Just use spray paint John . I did mention it earlier :poke: Rob |
| awemawson:
Now you've done it Rob - I really want one of those laser engravers :( :( John remind me of the details of the one you got. :clap: |
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