Z axis cuts to deep

[lyrad64]

I am just trying to vcarve text got depth set to .125 inches in vcarve pro manually set y access and it cuts half a inch deep

[gerry]

Please post your vcarve file, or a link to it.

[lyrad64]

cant figure out how to copy toolpath here

[damonlayne]

When you select 'Reply' to this post, hit 'Add Attachment' and find your Vcarve file. Attach that file so the group can troubleshoot for you. You might have to zip the file if it is large.

[lyrad64]

1234.mmg (72.28 KB) basically just trying to do a practice piece to get to know use of controller..if i use touch off puck bit slams into it .If i do a manual z zero and run program depth varies by a lot last try it cut into spoilboard. thats a good inch below where i zeroed it

[lyrad64]

this is what the z axis says after i do a all axis home

[gerry]

Jan 2, 2021 11:58:57 GMT -5 lyrad64 said:

View Attachment basically just trying to do a practice piece to get to know use of controller..if i use touch off puck bit slams into it .If i do a manual z zero and run program depth varies by a lot last try it cut into spoilboard. thats a good inch below where i zeroed it

That's your gcode file. Please post the VCarve '.crv' file.

[lyrad64]

1234.crv (201.5 KB)

[gerry]

Jan 2, 2021 11:58:57 GMT -5 lyrad64 said:

View Attachment basically just trying to do a practice piece to get to know use of controller..if i use touch off puck bit slams into it .If i do a manual z zero and run program depth varies by a lot last try it cut into spoilboard. thats a good inch below where i zeroed it

Your crv file looks good.

Check this out on how to set the lowering speed of the bit down to the puck when doing a touch off. 600 is way too high.
Toolset Speed


Are you setting the Z=0 of the bit on the spoil board or the top of the material. Also take a pair of calipers and check the thickness of the puck. There is a good chance it is incorrect.


Richauto Puck Thickness setting

[lyrad64]

thanks i reset the tool set speed.setting z zero off of top of material.....watched the axiom home all axis video after they zero x and y axis the z axis reads +59.836 after i set my all axis home my z axis reads+28.200 could this be why it cutting way to deep

[gerry]

The 28.200 should be the distance, in mm, from the tip of your bit to the top of your workpiece. You can lower your bit until it touches the top of the workpiece. It should be 0.0. When you get closer to 0, you can change the travel speed using the blue fast/slow button on the controller. In 'fast' move it increments in 0.5mm steps, 'slow' is 0.1mm steps.

[lyrad64]

Jan 2, 2021 18:09:00 GMT -5 gerry said:

The 28.200 should be the distance, in mm, from the tip of your bit to the top of your workpiece. You can lower your bit until it touches the top of the workpiece. It should be 0.0. When you get closer to 0, you can change the travel speed using the blue fast/slow button on the controller. In 'fast' move it increments in 0.5mm steps, 'slow' is 0.1mm steps.

gerry thanks for that ..first picture is after i zero z using tool set  ..puck height is 25mm....second picture is when i manually lower bit to work piece surface  ...not sure if these readings are correct do i use the 1z or 1a readings.im a total beginner so not really sure if the 1z reading should be at zero when i manually lower bit to work piece surface

[gerry]

first picture is after i zero z using tool set ..puck height is 25mm.

The only relation the 'number' 25 has to do with anything, is that it should be exactly the same as C.A.D. Thickness: Thickness of tool touch-off puck in your controller. It won't show up in any of the measurements. If you now move the bit over the measured work piece where you measured with the puck, it should be 22.284 mm above the work surface. 1Z is the correct reading. 1A would be if you have a 4th axis plugged in.

A simple test is to forget having a workpiece in place. Use the spoil board. 

Place the puck on the spoil board. Lower the bit manually until the tip of the bit is within a couple of inches of the top of the puck. Hit the button marked Tool Set. The bit lowers, touches the top of the puck, and retracts. The number in 1Z should be the distance from the spoil board to the tip of the bit, in millimeters. Now, slowly (low speed) bring the bit down until it just touches the spoil board. Back lighting with a flashlight helps. When the bit is touching the spoil board, 1Z should now read 0.0. If it does not read 0.0, then the C.A.D. Thickness does not match the actual thickness of the puck. Also, if it doesn't match, the there may be another problem. You should be able to get this dead bang on 0.0 for multiple tries.

Try this several times if you change the C.A.D. Thickness setting in the controller. You should only have to calibrate this if you resurface the PUCK. No problem if you resurface your spoil board.

[lyrad64]

Jan 3, 2021 14:32:33 GMT -5 gerry said:

first picture is after i zero z using tool set ..puck height is 25mm.

The only relation the 'number' 25 has to do with anything, is that it should be exactly the same as C.A.D. Thickness: Thickness of tool touch-off puck in your controller. It won't show up in any of the measurements. If you now move the bit over the measured work piece where you measured with the puck, it should be 22.284 mm above the work surface. 1Z is the correct reading. 1A would be if you have a 4th axis plugged in.

A simple test is to forget having a workpiece in place. Use the spoil board. 

Place the puck on the spoil board. Lower the bit manually until the tip of the bit is within a couple of inches of the top of the puck. Hit the button marked Tool Set. The bit lowers, touches the top of the puck, and retracts. The number in 1Z should be the distance from the spoil board to the tip of the bit, in millimeters. Now, slowly (low speed) bring the bit down until it just touches the spoil board. Back lighting with a flashlight helps. When the bit is touching the spoil board, 1Z should now read 0.0. If it does not read 0.0, then the C.A.D. Thickness does not match the actual thickness of the puck. Also, if it doesn't match, the there may be another problem. You should be able to get this dead bang on 0.0 for multiple tries.

Try this several times if you change the C.A.D. Thickness setting in the controller. You should only have to calibrate this if you resurface the PUCK. No problem if you resurface your spoil board.

thanks ill try that... so i tried that set puck on spoil board lowered bit did tool touch off  lowered bit manually to spoil board z read+17.3   puck is set to 25.0mm in cad thickness

[gerry]

thanks ill try that... so i tried that set puck on spoil board lowered bit did tool touch off lowered bit manually to spoil board z read+17.3 puck is set to 25.0mm in cad thickness

What is actual thickness of your puck?? That reading means the puck should be 42.3mm (25.0+17.3).

[lyrad64]

Jan 3, 2021 15:09:41 GMT -5 gerry said:

thanks ill try that... so i tried that set puck on spoil board lowered bit did tool touch off lowered bit manually to spoil board z read+17.3 puck is set to 25.0mm in cad thickness

What is actual thickness of your puck?? That reading means the puck should be 42.3mm (25.0+17.3).

i dont have a set of calipers yet but its the standard puck 25mm or so

[bentley]

Hi. Buy yourself a half decent set of callipers. Your gonna need them to do any quality work. I use both callipers and a micrometer when I do any work. Don’t guess. That’s how you make mistakes. Also there are quite a few YouTube videos out there for beginners. One other thing if you insist on doing a manual Z zero. Remember a piece of typewriter paper is anywhere between 3 and 5 thousands of an inch depending on the weight of the paper. So don’t forget to take that into consideration also.
Bentley