Please help, I need some addvise

Moving head.
When I page up the spindel goes down.

I must be changing it in the wrong place Lcnc errors out when I start it.
I went to the hal.

I got it, Thanx

Just wondering if there is a clever way to convert or change a mill ngc to a router ngc?
Table moving to head moving.

Think of it as the tool moving in relation to the workpiece and forget what moves to change the position of the tool, that is what a .ngc file describes.

You will be able to answer your own question

allenwg2005 wrote:

Just wondering if there is a clever way to convert or change a mill ngc to a router ngc?
Table moving to head moving.

It should not matter, if the machine is set up right, the same g-code should work perfectly well on both.

A lathe on the other hand is an entirely different animal.

The only reason I ask is, there are a number of interesting “example files” that would be helpful to read (the Gcode), and run dry (no material, no cutting tool).
They are obviously written for a vertical mill “positive up”, my gantry router is set to “positive down”.

Todd, you have experience with this as the machine you listed for sale is a gantry style router.
Assuming it is positive down in your case, is there a simple way to use these files without going in and changing the sign for the values on all Z axis Gcode moves?

Every router I have ever worked with is positive up and negative down (tool moving away from the material positive). And we have 16 of them rainging in size from small a small table top to large comertial modles from Komo, Heian, and Northwood. Its realy the only way that makes sence.

On all these machines Z0 is at the top of the Z travel. Then offsets and or machine coordinates move Z0 to the table or work surface. So the machine is always working in negative machine coordinates (think G53).

On a mill with a moving table, is where things might seem a little odd. Movements in the code are suposed to be tool relative to the work piece. So on a moving table with a stasionary tool. The table moving up should be a negative movement, dito table moving from right to left would be a posative X move.