what to buy? - good compromise CNC driller for PCB prototyping.

[mcphill]

Do you have any photos of the results with that end mill? I use the www.drewtronics.com 60 degree bit. I also use this bit for engraving in plastic and wood (see the second photo).

That link doesn't work for me. Is it right? YGM.

[kn6za]

mcphill,

Try www.drewtronics.net

[mcphill]

mcphill,

Try www.drewtronics.net

Guess you ought to know! Just sent you an e-mail.

[Jay C]

Jayc,

Nice pics! What are the trace widths on the pcb in the photo? Nice board.

20 mils. Do you think the other type of bit you sell would be better for the plastics? The bit I'm using was "dropped" and tip broke off so I had nothing to lose

Jay

[kn6za]

Jay,

The other tool I sell is the triple flat, and this one wont work well in plastic. This tool will cause lots of plastic fluffy burs at the top surface of the cut, and poor surface finish inside the cut as chips get recut and pushed into the walls.

I have seen some of your other boards on the net, all of them very nice.

[mcphill]

The V90 isn't a very good match for pcb's unless you are building old style DIP packages and simple circuits. Looking through the forum shows a fair number of quality problems with Probotix and a few unhappy customers as well as some poor treatment of those.

While you are entitled to your opion, with the exception of "a few unhappy customers" (and who doesn't have those?), I disagree with you on every point you made in this statement.