Warner Crawford Etcher parts list questions

PIndelicato · Mar 28, 2011

I think I'm going to build this etcher finally and I have 2 questions about the parts list shown on Crawford's site:

1) Power cord - the power cord listed can't be found on Radio Shack's site, and it doesn't say what kind of cord it needs to be. 2 prong? 3 prong? specs?

2) Bridge Rectifier(s) - Parts list says Rectifiers (plural), but is only one needed?

Thanks for any help!

Josh Dabney · Mar 28, 2011

Paul,

3 prong power cord- refer to this page "connecting the wires" and look at #'s 1,2,&5
http://chriscrawfordknives.com/#/electro-etching-unit-3/4535349992

Only one bridge rectifier is needed.

Josh

Edited to add- Any 3 prong plug will work for ya (old extension cord etc.). If you want to order it from Radio Shack this one is the cheapest available online. Just cut the other end off and wire it up
http://www.radioshack.com/product/index.jsp?productId=3875426

PIndelicato · Mar 28, 2011

Thanks Josh! I didn't make it past the 2nd page of the tutorial, so I appreciate the assist.

I think I have some power cords laying around that will work fine. Hope to make it to Rat Shack this morning!

PIndelicato · Mar 28, 2011

Just got back from the local Rat Shack. Unfortunately they didn't have some of the parts so I had to order them. Curiously though, they are now selling Ferric Chloride there again...they swore up and down to me about a year ago that it had been discontinued.

12345678910 · Mar 28, 2011

I find the schematic diagram here much more helpful than the Crawford instructions.

http://www.knives.mlogiudice.com/knifeshop/etcher/index.shtml
http://www.knives.mlogiudice.com/knifeshop/etcher/electro-etcher_circuit.pdf

H0tR0d · Mar 28, 2011

+1 to what 12345678910 said, the electrical print made ALOT more sense to me than the written instructions.

PIndelicato · Mar 28, 2011

Thanks for the links, I'll have a look at the schematic there.

Fellhoelter · Mar 29, 2011

12345678910 said:
I find the schematic diagram here much more helpful than the Crawford instructions.

http://www.knives.mlogiudice.com/knifeshop/etcher/index.shtml
http://www.knives.mlogiudice.com/knifeshop/etcher/electro-etcher_circuit.pdf

Me too, but they are still retarded as far as standard DC wiring goes.

Red should be positive, and Black should be negative.

Your part is positive, and your pad is negative.

Wiring it correctly allows anyone to also use it as a 12v power supply.

You may skoff, but I tested a bunch of 12v led lights last night with mine...