Homebrew PCBs

I'm going to mention a few things that I have mentioned before:

I used translucent Polyester paper.  I don't have a source right now. Toner adheres very well and is opaque.

I did use targets and alignment holes at the edge.  I used thumbtacks to align the masks on the board.

I did spin coat the resist.  The alignment holes do create a problem with the spin coating because they were made before the spin-coat not after.

I just used the surface tension of water to hold the polyester paper in place with the alignment Thumb tacks for registration.

I would image that there is room for improvement:  For instance using a sheet of acrylic and a PC drill to create the alignment holes and drilling under a safelight and doing the making of the alignment holes after coating the boards.  You could probably find some machined pins for alignment too.

	 
	
	








	


	
	


      

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