How to make etched metal parts.
All of the highest quality parts that I made went to the customer, but edge quality and photoresist adhesion is still a problem.

The photomask dark areas can be expanded, and then the part etched for a longer amount of time to make the edges more perpendicular to the surface. I forgot to mention this clever way to improve the etch aspect ratio called "etch factor" http://www.chemcut.net/wpcontent/upl...

Dry film photoresist https://www.amazon.com/30cm%C3%975mP...

Photoresist processing datasheet https://www.dupont.com/content/dam/du...

Special ink and transparencies (films) for photomasks: https://filmdirectonline.com/

Flip pins https://shop.evilmadscientist.com/pro...

405nm lights: https://www.amazon.com/gp/customerre...

Epson printer with tank for custom ink: https://epson.com/ForWork/Printers/I...

Strange Parts did a great video on metal business cards:    • These STEEL Business Cards WEREN'T Ma...  

https://mymetalbusinesscard.com/produ... 100 cards for $250 could be the cheapest way to get custom mechanical parts:    • How to Make Metal Business Cards: The...  

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