Things are worse

LowRider CNC Troubleshooting
1

So I printed a new core and installed it and I spent a couple of hours tramming the router and now this.

IMG_1851
IMG_18511920×2560 544 KB

This happened 3 times always before the last cut. All of a sudden the router would go on a random path and then it would plunge deeply into the wood. On the piece on the right the cut should have cut the outline of the part. I double checked the g code and checked the simulation in Estlcam but nothing shows up. When it does the final plunge, it raises the whole gantry.

Any suggestions?

2

Mine will do that with my freezer turning on. Till i changed it to a different circuit in the basement. I beleave some here also had this happen with static in the vacuum hose. I general check all emf inputs

3

Is there a tool change happening then? I’m wondering if there is, and its probing but a probe isn’t connected. Then it’s hitting max depth which would cause it to raise the gantry and the randomness is because of skipped steps from plunging too deep.

I would be curious to review the gcode.

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4

You’re running a Lowrider with a jackpot?

Are you running the job from a gcode file on the SD card (preferred), or do you use a sender of some kind?

5

I ran the g code in the air and nothing untoward happened. Here’s the file:
clock face final.nc (56.1 KB)

6

Does it always happen in the same location on your spoil board?

I had similar issues twice, once when the core got stuck on a protruding hold down screw, and once when the top roller on the X axis was jamming against the vacuum hose. Something similar might be happening to you.

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7

I’m wondering if its binding when going deeper. Most of it is at 2.5 or 3mm deep. The last 2 holes and then cutting out the whole part is 22mm. It’s doing 2.5mm at a time which should be fine.

@Bartman 's suggestion sounds like a possibility as well.

If I were you, I would try this. I think you need to validate that you can go 22mm deep without binding or having anything catch on anything. Also to make sure the endmill is long enough.

  1. Place the stock on the spoilboard just to the right of where the last issue was.
  2. Set Z to 0 on top of the stock.
  3. Move up off the stock a little and drive the endmill just to the left of the stock.
  4. See if you can manually drive it to Z of -22. I assume this is a little more than the stock thickness, so turn the router on for going into the spoilboard.

If it does anything weird, a video would be helpful.

Also, what size endmill is this?

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8

I’m still not sure what the problem was, but I reordered the cut order and opened up the round holes a mm and everything is cutting fine.

Thanks again for all the tips

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9

That’s an xcarve at the makerspace. Cuts ok until you decide to turn in a vacuum.

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