Using the MPCNC to make new parts for the lowrider

Things You've Made
1

i just got my MPCNC squared up again after cracking a core bracket because of a print defect I missed.
(new brackets on the core, slightly shorter arms for extra rigidity, and re-trammed it)

first thing after the test cuts was a new 5mm Al plate for my lowrider2 (i am slowly making all the parts to do a full Al upgrade on my lowrider2. (cnc’s to make cnc’s right?)

20211024_164233
20211024_1642333000×4000 2.69 MB

pockets cut and holes drilled and screwed down for the cut out

20211025_141658
20211025_1416584000×3000 2.73 MB

all cut out

20211025_141815_HDR
20211025_141815_HDR3000×4000 1.84 MB

finished part, need to debur the edges cause it was done with an upcut bit, so its a very slight bur on the top.

20211025_142221_HDR
20211025_142221_HDR4000×3000 2.14 MB

measuring up

20211025_142236_HDR
20211025_142236_HDR4000×3000 1.94 MB

20211025_142117_HDR
20211025_142117_HDR4000×3000 2.23 MB

20211025_142058_HDR
20211025_142058_HDR4000×3000 2.19 MB

everything is within 0.3mm so I am happy.

7 Likes
2

o and in case anyone is wondering, this plate is the Maketa 0700 series plate, that has a duel motor mod on it
thingiverse link below

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3

Thanks! I’ve been searching for that “thing” for a while! :smiley: Can you explain the reason for the motor mod please?

4

mostly because i wanted to run the X axis faster then is normally sane :slight_smile:
the second motor / driver gives me extra torque
(i am also looking at putting a pair of nema23’s on the Y axis for the same reason)

1 Like
5

Just curious, how do your drive the second X stepper? Do you have a six driver board like the SKR Pro or did you hook them up in series?

6

i have a 5 driver board, my intention is to make a breakout for it, and power the 6th driver via a patch from the power supply, and split the step / dir / enable pins for the X axis drivers
thus making them “share” the X output signal (im using a GT2560)

7

If you were looking for more power, then I would just write them in series. There’s no reason for auto squaring. Series can affect torque at high speed, but it depends on your definition of high speed and a 24V psu would fix that too.

4 Likes
8

That’s a big caliper.

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9

this is why my plan is to run 2 separate stepper drivers and slave them to the same set of control outputs from the micro controller.
i have done this trick before on my laser cutter and it seems to work fine.

gets me 1 driver per motor, but no auto squaring (which I don’t need in this case anyway)

1 Like