Engraving issues

[Boyan Silyavski]

Hi Derek,

Dont rush to disassemble everything.

That what you see on the dial indicator is the servo correcting after movement and fixing the gantry in position i believe.

If needed mark with lines and marker and check in order both sides :
-the 6 screws that tighten the ball nut to the rotating part
-the big bearings on the rotating nut if they have not slipped on the housing
-if 2 nuts that hold rotating part to nut are not loose

Most possibly this is loose pulley, belt or end support problem. Check carefully all pulleys for slip, check if belts are well under tension/ same tension. Then check end supports if sth un screwed there. If not sure, disassemble motors and cement pulley again.

In fact you should have cemented every single screw on the machine, which i discovered was my big mistake on the first machine i made.

Ahh, and move gantry to one side Check with finger as you are pulling guitar strings if both screws sound with same pitch. If not, tighten all so that is the case. No need to check against tuner. But if you want to go so far, use Linostrobe on the phone. Other will not pick the sound.


PS. And remove that backslash compensation in Mach3. this will additionally mess things up. I have a small machine with backslash and from experience i know its better without it.