August 11, 2016 at 6:00 am #15949
I have finished my build and pen calibration tests. Works well!.August 11, 2016 at 6:25 am #15951
Pics?August 11, 2016 at 10:46 am #15987
You used Nema 23 steppers? How’d that go? What are the benefits?August 13, 2016 at 8:26 am #16088
Pic of my machine.
Attachments:August 13, 2016 at 8:33 am #16090
Hi The build went easy I used the original nema23 motor mounts on thingiverse. I had to up date to 20 teeth gt2 pulleys as I had 1/4 motor shafts.
I had the huge nema23 motors from another build i started and 24V power supply.
Attachments:August 13, 2016 at 8:35 am #16092
I did calibration circles and squares, then I decided to do the single line art plot from thingiverse, I used estlcam and it creates the toolpath.
Estlcam Worked well with my Grbl board.
Attachments:August 13, 2016 at 8:50 am #16095
See the link of it pen plotting at 1200mm/min. Tesla line art test plot downloaded From thingiverse.
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.youtube.com/watch%3Fv%3DP_znw_EZykY&ved=0ahUKEwjz28f5677OAhUBySYKHeBoDBwQtwIIGzAA&usg=AFQjCNETdClY-3O0zS49wjfvHG7hYSstiA&sig2=lal7Lt6Vud-03Hko3G5snQMpcnc tesla line art pen plotAugust 13, 2016 at 9:08 am #16096
I also decided to build a 2×4 table for the mpcnc. Once the router is fitted I will move it to its new home.
Attachments:August 13, 2016 at 9:19 am #16098
Here is another showing the motor mount.
Attachments:August 15, 2016 at 8:26 am #16179
Now that the Pen test worked out I have test fitted the router. I had a old HFT router same OD/size as Makita router so I printed the holder form Thingiverse..
I also found a dust shoe for 65mm Diameter on line, it is open source. It routes the air from the router out the side and vacuums at the bottom, sO it does not blow the dust around.
Hoping for first dust soon.
Attachments:August 15, 2016 at 8:30 am #16183
Nice. Got a link to the dust shroud?August 15, 2016 at 11:04 am #16197August 16, 2016 at 8:27 am #16227
Since my machine uses 282oz/in NEMA23 motors on the x & Y axes I decided to add max travel limit switches to machine.
Limit switch holders were printed from thingiverse.
Attachments:August 18, 2016 at 4:40 pm #16326
Wow the cnc worked well I used 90 deg v-bitand carved my first picture in styrafoam.
Achieved first dust. Ok ok first Styrofoam chips. See pics below.
Just to try with the dust shoe and without, I started with a vacuum pipe no dust shoe and it spread the chips all over, made a 😉 temp skirt for the dust shoe (blue painter tape) and it worked well.
Let the fun begin.
Attachments:August 19, 2016 at 5:50 pm #16390
Today I use the Estlcam feature to carve the picture with a v-bit, hard to see in the picture but the cut looks more 3d not just a outline.
Not amazing but baby steps in Styrofoam, also carved it very small.
Downloaded a jpg.
Used inkscape for edge detection
Used inkskape to Generate the DXF file and save.
Opened Estlcam and selected each section I wanted to carve Chose to carve inside.
Saved cnc program in Estlcam
Open NC file in Estlcam and cut
see pictures below.
I am also trying jpg/bmp to vector conversion software called wintopo. They have freeware version and it seems to have lots of functions.
Attachments:August 21, 2016 at 1:50 pm #16449
Today I did more engraving with a v-bit tried to cut some chipboard , the machine is running well. Seems very stable but I am not taking large cuts.
The dust shoe is working well.
See pictures below.
Attachments:August 21, 2016 at 5:28 pm #16469
Aww, man. He spilled his coffee!!September 17, 2016 at 10:53 am #17880
I started some wood engraving with a .103″/2.7mm dia cutter and made carved letter sign.
I had one axis off and had to rotate one stepper each time before turning on motors. I printed the old rigid mods from thingiverse and installed the 6 additional bearings. Now it works great. I will eventually print the new z axis.
old z axis rigid mod
See the pic below of the engrave.
Attachments:September 17, 2016 at 5:33 pm #17903
I also modified the dust shoe to get a shorter 1/8 bit to work and made the vacuum pipe vertical.
see my engraved picture just finished.
Attachments:September 24, 2016 at 1:27 pm #18263
I managed to get some time and practice on my machine.
Starting to get the hang of how to improve cuts.
Attachments:September 24, 2016 at 4:00 pm #18277
Looks really good. You can usually tell by how the cut walls or bottoms look. To me from those pics looks like your machine is great!September 26, 2016 at 5:59 pm #18443
I used a small cutter today and the machine worked well. It took a bit of time but the mpcnc worked well, I think my best cut so far.
Attachments:September 26, 2016 at 6:03 pm #18445
Once you get the hang of it you should be able to speed things up, usually by a deeper cut, but there are other ways as well.November 19, 2016 at 11:00 am #21199
Hi All Just a quick update on my machine I added drag chains and belt tensioners and they seem to be working well.
I got some 60deg carve bits so I can get back to making a few things.
Attachments:May 30, 2019 at 10:09 am #102011
sorry to dig up an old post but do you have your configuration.h and configuration_adv.h ???
i’m using the mpcnc firmware on an open build cnc with nema 23 motors and i struggle to set up acceleration and jerk to have move without misses steps.
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