Search found 12 matches

by aiden1015
Wed Apr 15, 2015 1:25 am
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

In case anyone else runs into a similar problem, I just wanted to update and show that I fixed it. The problem was backlash from the pulleys as cvoinescu pointed out. For me tightening wasn't enough though. What I did was to physically remove the Y-Axis motors and remove the pulleys. I took my Dreme...
by aiden1015
Fri Apr 03, 2015 1:18 pm
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

That sounds plausible. But I would think slowing my feed rate down would prevent rigidity issues, since the end mill is able to keep up and get material out of the way fast enough that I wouldn't notice. Maybe the best solution here is to accept that 32-TQFM (SMD Arduino IC package) can be done for ...
by aiden1015
Thu Apr 02, 2015 8:15 pm
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

I think it definitely takes a lot of tuning to get working properly. My main issue with the 3040's is that in order to get those working, it seems like you have to throw out everything except the frame. The parallel port is too outdated for the controller, I've heard nothing but bad things about the...
by aiden1015
Wed Apr 01, 2015 8:25 pm
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

WillAdams wrote:How tight are the belts?

I’ve found that they need to be really tight, pluckable like guitar strings.
I try to keep them as tight as I possibly can.
by aiden1015
Wed Apr 01, 2015 1:11 am
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

After tightening the pulley's these look a lot better. http://i.imgur.com/1X5VKuU.jpg I made my eagle file a bit smaller, and I still have some z-axis calibration to do, but... The left three traces should be 0.5mm wide and I'm measuring the vertical traces to be 0.25 and horizontal to be 0.13mm. Th...
by aiden1015
Wed Apr 01, 2015 12:17 am
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

That looks a lot like backlash to me. You say you checked your belts; have you checked your pulleys? The set screws sometimes work themselves loose. I checked the pulleys and they all seemed tight except for maybe two (each on a separate motor), but since each pulley has two set screws, I couldn't ...
by aiden1015
Tue Mar 31, 2015 11:49 pm
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Re: Trace width inconsistencies

Runout? If it was runout, shouldn't I see the error throughout the board? I'm only seeing the error when Y-axis is stationary and I'm moving along in the X-axis. They are supposed to be 0.5mm wide though. What spindle and endmill? It's the quiet cut spindle using a 20deg 0.2mm v-bit How is the spin...
by aiden1015
Tue Mar 31, 2015 11:01 pm
Forum: PCB Fabrication
Topic: Trace width inconsistencies
Replies: 13
Views: 3703

Trace width inconsistencies

Has anyone else had this problem? My vertical traces are pretty much bang on in width, but my horizontal traces seem to have a 50% error. My belts are tight, and everything looks OK in my g-code viewer (using ChilPeppr). The photo used GRBL but after my tiny-G showed up, I got my machine calibrated ...
by aiden1015
Mon Mar 23, 2015 11:17 pm
Forum: PCB Fabrication
Topic: GRBL Auto Leveling?
Replies: 16
Views: 11816

Re: GRBL Auto Leveling?

Scott216,

Thank you so much, that really clears up a lot for me. Are there any options to do multiple passes to cut the board out?
by aiden1015
Mon Mar 23, 2015 12:20 pm
Forum: PCB Fabrication
Topic: GRBL Auto Leveling?
Replies: 16
Views: 11816

Re: GRBL Auto Leveling?

I saw the manual, but it didn't seem to help. For example, on the first tab in the board section, I select generate milling and set the depth. But then I go over to the machine tab where it shows the actual end mill and explains what the different parameters are. I just don't seem to understand what...