Bitzero V1 issues

CNC Machines Shapeoko
1

I am re-learning how to use my SO3 with belt drive and regular spindle with Bitzero V1.
After updating computer software I find that I have no problems probing XYZ, (with probe hanging off the edge of the material,) but when I cut, I’m way above the bottom of where the cut should bottom out. In fact it starts cutting in the air as if the Z is off.

Small test piece and I know the spoil board is dead flat. I have checked V1 in the probe settings.

Is there something I need to update?
Randy

Machine: Shapeoko
GRBL Version: 1.1f

Carbide Motion 618
Machine Controller State: INIT
Grbl Cycle: Idle

{
“bitRunnerEnabled”: false,
“bitSetterEnabled”: false,
“bitSetterX”: -0.5,
“bitSetterY”: -395.5,
“bitZeroType”: 1,
“connection”: 1,
“lastConfigSent”: 0,
“lastProbeIndex”: 0,
“lastSizeOption”: 2,
“odometer”: [
{
“cleared”: false,
“minutes”: 43.41496666666699,
“startDate”: “2023-08-14”,
“travelX”: 33779.49957370758,
“travelY”: 33489.77601194382,
“travelZ”: 3393.124567747116
}
],
“showCarbideRouterRpm”: true,
“spindleType”: 0,
“travelX”: -420.0,
“travelY”: -430.0,
“travelZ”: -100.0,
“version”: 0,
“workOffsetX”: 371.79999980926516,
“workOffsetY”: 318.24999980926515,
“workOffsetZ”: 57.175
}

0 = 10, Step pulse, microseconds
1 = 255, Step idle delay, milliseconds
2 = 0, Step port invert, mask
3 = 6, Direction port invert, mask
4 = 0, Step enable invert, boolean
5 = 0, Limit pins invert, boolean
6 = 0, Probe pin invert, boolean
10 = 255, Status report, mask
11 = 0.02, Junction deviation, millimeters
12 = 0.01, Arc tolerance, millimeters
13 = 0, Report inches, boolean
20 = 0, Soft limits, boolean
21 = 0, Hard limits, boolean
22 = 1, Homing cycle, boolean
23 = 0, Homing dir invert, mask
24 = 100, Homing feed, mm/min
25 = 2000, Homing seek, mm/min
26 = 25, Homing debounce, milliseconds
27 = 3, Homing pull-off, millimeters
30 = 24000, Max spindle speed, RPM
31 = 0, Min spindle speed, RPM
32 = 0, Laser mode, boolean
100 = 40, X steps/mm
101 = 40, Y steps/mm
102 = 40, Z steps/mm
110 = 10000, X Max rate, mm/min
111 = 10000, Y Max rate, mm/min
112 = 5000, Z Max rate, mm/min
120 = 500, X Acceleration, mm/sec^2
121 = 500, Y Acceleration, mm/sec^2
122 = 400, Z Acceleration, mm/sec^2
130 = 845, X Max travel, millimeters
131 = 850, Y Max travel, millimeters
132 = 100, Z Max travel, millimeters

Maintenance:

Travel (km) 0.03, 0.03, 0.00, 0.72 Hours since 2023-08-14

Queue Empty

2

Please check in at support@carbid3d.com if you haven’t already and we will try to look into this with you.

3

Thanks, Will. I will do that.

4

Will I am coming to the conclusion that my Z belt must be slipping. It does seem a bit loose and I have again checked that when I probe the piece, I am indeed 6mm above it, so it only makes sense.

Now I need to figure out how to adjust the belt, if I can.
I have contacted support, but that was before I had this new information.

5

If the belt won’t hold and you can’t re-tension it, it’s probably worn and needs to be replaced.

We have them in our Maintenance Kit:

or, you could buy some from a specialty shop such as BB Man., SDP/SI, or Texas Belting — you want a Gates GT2 profile 2mm pitch 6mm wide endless loop belt 520–524mm in length

1 Like
7

I find that I do have a tensioner at the base of my Z axis belt.
Currently the belt would not come off the pulleys, but it’s loose enough to pinch it together just above or below the respective pulleys, and that seems way too loose. .
How snug should the belt be?

8

It should be “guitar string taut” (but not so tight as to bend the motor shaft).

1 Like
9

Perfect. Thanks
I’ll report back when I determine whether this has fixed the issue.

10

This worked, Will. I was left with a paper thin bottom that could be just an error in my measurement, rather than the nearly 5mm remainder I was getting before.

Thanks for your help, as always.
Cheers
Randy

11

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