![]() ![]() After many attempts with ESTLCam I finally started getting some consistent results: I was finally ready to attempt to cut something a little stronger than foam. Previously, the X was rotated 90 degrees and the Y was inverted so everything would draw/mill backwards. I just happened to have a piece of foam insulation that fit perfectly on the bed and it worked really well once I had the axis swapped around by flipping the motor plugs on the RAMPS board to move the 0,0 x/y home to the front left corner of the bed. After replacing the driver and adjusting the voltage, it seems to work now. But I had some issues with the Z-axis plunging too far down because the voltage was too low. I used some 3-in-1 oil on it and disassembled it and reassembled it (with the metal coupler), and it finally stopped being so grindy. Everything from a bad driver, incorrect voltage settings and a ‘grindy’ threaded rod. I first tried the pen/marker mount which ultimately led to the resolution of a few of the items mentioned above…but it worked mostly! You can hear the Z-axis at the end of the clip make a horrible grindy sound. With that out of the way, how does it run? ![]() I just glued it there and it makes me happy. I also wanted to mount my logo somewhere and ended up printing a cactus that had a cut out on the back for the upper mount on the DW660. I’ve also printed but not yet assembled these lower profile clamps which are a nice match.Įdward brought his MPCNC to a meet up recently so I got to see his machine up close while I was still finalizing my assembly which helped immensely. It works really well with these printable clamps and this knob which Edward found. Edward got some for his ( check out his progress as well) and had enough leftover which I got from him. The DW660 is supposed to be tool-less but this makes it much easier to swap bits.Īfter some discussions on the forum about the MPCNC, it was suggested that MDF slot board would be a good foundation for the MPCNC. The DW660 can be a little tricky to change out the bits when it’s mounted but I found this great printable wrench. So I might have had a bad (or I blew it) driver board that was also affecting my Z axis control. It was only after I swapped out the A4988 driver for the Z that everything came back up fully. I found a lot of people with the same problem and I ultimately soldered in a resistor to the LCD board and the contrast improved (but still not as good as before and as good as other people’s LCDs). I also swapped out the ‘pineapple’ coupler on the Z axis with a metal one because I had cracked it way too easily during installation and again, was having some slippage.Īfter exhaustively looking at other people’s builds, I decided I didn’t like any of the cable/drag chain options out there for my specific build so I modified a part and a 3d printed chain that I suspended underneath the outer frame conduits. The printed pulleys were a bit bigger than the metal ones which affected the motion axis and scaled things larger than they should have been. This had two benefits – one, the slipping stopped and things were much smoother and two, my scale was correct. I had originally planned on using 3D printed pulleys using the same size specified (note the above photo has it installed backwards) but found that my belts slipped on them too much so I swapped them out for metal ones. The middle gantry assembly is literally a piece of art and was actually a fun puzzle to put together.Ī few other things I changed/replaced or upgraded: The detailed assembly instructions were very good for the most part…there was a few gaps between old/new part revisions but just looking at the render and other photos made it easy to complete all the steps. ![]() I kept the taller 7.5″ Z axis to give me flexibility with what I mount to the MPCNC. I recut the conduit down to fit a 24″ x 24″ table (conveniently the size of some plywood I had) which ultimately gives me a build area of ~ 13.5″ x 13.5″. I also wanted a build that I could would be able to fit into my car and move myself. I ended up downsizing the frame to make it more manageable and realizing that I don’t currently have a need to mill large pieces. I received/sourced the final parts to finish assembly including the Dewalt DW660 I was going to use as my primary spindle. It’s been a few weeks since I started the Mostly Printed CNC project (MPCNC) and thought it would be a good time for an update. ![]()
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