Chainlink, Are you going to install limit switches or use software limits in Mach?
I have a 900/Standard and added fuses to each motor. I also want to add limit switches. Still a ways from there as I need time to dig in and time is pretty short. Let me know if you want to see what a stock 900 standard CNC looks like for your upgrade reference. Thanks, Steve On Aug 19, 9:06 pm, "Tim Krause" <artmarb...@comcast.net> wrote: > What's the rpm on the spindle? This is where you might benefit from using > gears or a timing belt to increase the torque, but you will loose your > speed. Stepper start loosing torque around the 500 rpm range generally. > At least we know now that the 387oz range motor is too small. > > You might want to check your bushings on your z axis and make sure that they > are not oversized and causing the z axis to bind up more than it should. > I've seen a couple of the Z-axis where if you removed the lead screw, the > router would not move up or down. There is a fine line between slop, freely > moving and binding. > > Hopefully Art can guide you on the threading. I'd would like to see a > sample g-code for the spirals that are not using g01 to make the move. I > have assumed all along that a threading cycle could be used. > > Thanks for the update and video! > > -Tim > > > > > > > > > > ----- Original Message ----- > From: "Chainlink" <dustinyo...@hotmail.com> > To: "Legacy Ornamental Mills" <legacy-ornamental-mills@googlegroups.com> > Sent: Friday, August 19, 2011 4:58 PM > Subject: Re: Build log of sorts for a 1200 upgrade to CNC > > > I had my first success today with the upgrade. Here is a link to a > > video of the carve in action! Sorry about the loud volume; I wasn't in > > the mood to edit the video. > > >http://www.youtube.com/watch?v=vlQ46e3gwiA > > > Details: > > > I needed some 1 1/2" dowels for my newest table project, so I decided > > to try my best to use my CNC upgrade. I had problems in two areas: > > First, my Z-axis stalled when raising. Second, I had to make shallow > > passes to keep from stalling the A-axis. One thing I did notice was > > that as the motors warmed up, my z-axis was much better behaved and > > seemed to work well. > > > I spent just about 8 minutes per dowel once I got the procedure down. > > I even bumped up the A-axis motor speed and ran it so that I could run > > some sandpaper over the finished dowel--it's pretty nice to be able to > > do that. I must say that I absolutely loved the ease of repeatability > > that the CNC commands provided. My Z axis held it's depth without > > having to constantly fiddle with locking down the Z axis on every > > depth change like I used to do. Small changes to depth are really easy > > to make. I ended up just where I wanted to be with my dowels, a bit > > undersized at 1.48" to 1.49". > > > Although I spent most of my evening in the shop, I feel like my time > > was at least equally spent vs. manual milling without the added > > frustration and effort. It was nice to prepare the next blank while I > > was waiting. Next up, the big timesaver would be to cut my threads via > > CNC. I don't know where to start with that one, if anyone has any > > tips. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Legacy Ornamental Mills" group.> To post to this group, send email to > > legacy-ornamental-mills@googlegroups.com.> To unsubscribe from this group, > send email to > > legacy-ornamental-mills+unsubscr...@googlegroups.com.> For more options, > visit this group at > > http://groups.google.com/group/legacy-ornamental-mills?hl=en. > > > > > > > > -- You received this message because you are subscribed to the Google Groups "Legacy Ornamental Mills" group. To post to this group, send email to legacy-ornamental-mills@googlegroups.com. To unsubscribe from this group, send email to legacy-ornamental-mills+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/legacy-ornamental-mills?hl=en.
