Machsupport Forum
General CNC Chat => Show"N"Tell ( What you have made with your CNC machine.) => Topic started by: Jeff_Birt on January 29, 2008, 05:24:18 PM
-
I've made small circuit board on my Dyna 2400 before converting it to Mach3 control but this is the first after the conversion. The board was designed in Eagle (http://www.cadsoftusa.com/) which is a very nice program with a free limited version. The G-Code was generated with http://groups.yahoo.com/group/pcb-gcode/, which works great and has a Mach3 profile. It took a few tries cutting wax to get the settings down but it turned out pretty good. BTW, I ordered the routing and drill bits from http://precisebits.com/ who seem to be really nice folks. Now I just need to fix up my layout some.
The board is 2.8" x 2.5" and the traces are quite large at 0.016". It's an adapter board for another Mach conversion :)
Jeff
-
Very impressive!!! How big were your bits?
-
I used a 60deg v-bit for the isolation routing: http://precisebits.com/products/carbidebits/scoreengrave.asp?txtsearchParamTxt=&txtsearchParamCat=20&txtsearchParamType=ALL&iLevel=1&txtsearchParamMan=ALL&txtsearchParamVen=ALL&txtFromSearch=fromSearch&btnSearch.x=10&btnSearch.y=11
and three diffrent size drill bits (#72, #67, #64 as I recall): http://precisebits.com/products/carbidebits/drills.asp?txtsearchParamTxt=wire&txtsearchParamCat=7&txtsearchParamType=ALL&iLevel=1&txtsearchParamMan=ALL&txtsearchParamVen=ALL&txtFromSearch=fromSearch&I1.x=10&I1.y=12
-
Amazingly clean.
Excellent post.
-
Good job Jeff, way to go. What is the other retrofit your working on?
Brett
-
It's a Bridgeport Discovery 308 VMC. I've been working on it in my spare time for another department here on campus. This board is an interface to split the two stock limit/home switches into three separate signals. One switch by itself is -Lim, the other by itself is Home, both together is +Lim.
http://www.machsupport.com/forum/index.php/topic,3328.0.html
-
How small can it go!!! Yup,that's a dime in the photo.I used a Sherline and pcb-gcode and Mach3 and built this tiny bluetooth type transmitter/receiver pair. Cutter was 45 degree,conical. Some of that soldering was hairy. Just showing that we can make anything and encouraging pcb'ers to go crazy! Check out the surface mount antenna.
-
Very cool. Can you give us an idea on trace width? Also, how are you handling regesteringn the baord when doing two sided PCBs?
-
The line width is on the order of .01(which is around the size of the reciever and tssop micro's leads) since I can't exactly control the results given a little slop in my Z.
I make a pocket in some expanded PVC to the exact dimensions of the board and then flip. I usually do my drilling on the first side and it lines up pretty darn close to where it's suppose to be on the other side
-
Dear All,
I recently also made my pcb with Mach, this is my board, please visit my blog,
http://tw.myblog.yahoo.com/jjyeh-1976/article?mid=220&prev=-1&next=149
this blog is written in traditional Chinese, but you can see the image of the board.
I mill double side pcb, the size is about 50mm x 30mm, the package of the lower right
corner is the LGA-14.
-
While waiting for components I was messing around with adding a silkscreen to the component side of the board. After searching the web I found that some folks reported having great success laser printing on Staples "photo basic gloss" inkjet paper (#item# 648181, $20 for 50 8.5"x11"sheets). I mirrored the silkscreen and printed it onto a half sheet of the Staples paper, lined up the printout face down on the top of my board and then used cloths iron to transfer the toner to the board. There is a lot of information about the process here: http://www.fullnet.com/~tomg/gooteepc.htm
I'm pretty happy with the results although I wish I had gotten it aligned better on my board.
-
we are also make some research about PCB bits, thank you for the helpful info here :)