Calibration on floor mats

Troubleshooting
1

In one of his latest videos, Bar suggested to use floor mats under the plywood panel to ensure stability and act as a spoilboard.

Now my garage is cleaner and can be used, it’s finally time to use my Maslow CNC. I’ve drilled my floor to add congrete bolts as suggested on this page: Attaching to the Floor — Maslow

I was wondering if I should calibrate the Maslow on floor mats (given the friction) or directly on the plywood board ? Should I just need to set the spoilboard thickness to 10mm and the material thickness to 18mm ?
Which parameters am I supposed to change before running the calibration ?

Thanks

2

Hi I suggest you Run Find Anchors (formally calibrate) on the plywood to reduce friction effects, you only need to set the spoil board thickness once, the material thickness varies depending on what you are cutting, (Internally, the spoil board thickness and material thickness are added together and used to calculate Z value offsets).
Make sure your Z axis is completely lowered prior to Find anchors.

3

Thanks for your answer.
Should I need to remove the router from the Maslow to get the lowest Z axis as possible ?

4

No, you need the setup as close to actual cutting as possible, no bit of course.

5

Thank you.

So I just need to set these parameters and that’s all ? And then use the find anchors button.

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My anchors are directly on the ground but it I add a spacer, should I need to redure the spoilboard thickness ?
For example: spoilboard is 10mm and anchors are on a 15mm spacer. Should I set thickness to -5mm (minus five) ?

6

I Archi wrote:

Should I need to remove the router from the Maslow to get the lowest Z axis as possible ?

the maslow should be able to go all the way down with the router in it. If this
isn’t possible, I would 3d print some spacers to go on the lead screws to make
it so the machien bottoms out before the router pokes below the sled.

on mine, where I have a spindle, not a router, I have to take off the nut from
the chuck to do this.

when you start find anchors, it sets that point in the Z travel to be Z=0 and
you need to be able to reproduce that point. With the default router, this works
with it all the way down to the stops.

David Lang

7

I Archi wrote:

My anchors are directly on the ground but it I add a spacer, should I need to redure the spoilboard thickness ?
For example: spoilboard is 10mm and anchors are on a 15mm spacer. Should I set thickness to -5mm (minus five) ?

exactly.

David Lang

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8

I just want to confirm that this is exactly what I do. I put a sheet of plywood on the mat and enter the thicknesses there

9

Thnsk. If I understand correclty, I need to recalibrate if the material thickness changed ?

10

No, you just have to reset the thickness variables to match what you have. The software will compensate for different thicknesses.

1 Like