I made a pantogram from lollypop sticks and machine screws and nuts, the centre one is sharpened to scribe on the copper clad board. The distance between all adjacent screws is equal to make a 2:1 reduction.
The design is printed at double size and then traced with the screw on the right side, applying a little pressure to the scribe, the left side screw is fixed.
Then it just needs going over with an etch resist pen (I use an Edding 404) and etching.
For scale the pads with holes are 2.54mm (0.1 inches) spacing.
The design is printed at double size and then traced with the screw on the right side, applying a little pressure to the scribe, the left side screw is fixed.
Then it just needs going over with an etch resist pen (I use an Edding 404) and etching.
For scale the pads with holes are 2.54mm (0.1 inches) spacing.
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