Really appreciate your support! Second time to offer me to send over some parts
I got the screws out and bought some m3 bolts and some loctite.
Put some loctite and the screws in...and unfortunately tightened them so much that they ripped apart.
Guess I won't get them out easy anymore, but at least they should be tight enough now.
Gonna let it try now for at least 12 hours just to make sure

 

Haha. Got to admit that I'm not a "mechanic" at all. Typical IT guy.... 1's and 0's. I chose the 1 (full power).
I did an "air-run" and so far it looked alright. Wonder what it will look like tomorrow for a real carve

 

Just for your information
It seems to be running again. Not really sure if it was the cables, the eccentric spacers or the pulley screws.
But I think it was actually the pulley screws.
Did a cut in oak with 1300 mm / min with with v-bit and then with a 1/8 downcut bit.
Same project that failed several times before.
Still thanks for all your help

 

Just picked up a ox used
It has only had a couple of hours use, the guy who built it is moving to Portugal so couldn’t take it with him.
I’m just starting out but the y axis jumps in some areas and doesn’t run smoothly.
Z and X seem ok.
Any advice or ideas how to get it running nice a smooth.
Thanks

 

Glad to hear you got it sorted conehead.

I think mine *might* be sorted. To be honest, I have no idea what it was. I did a fairly long cut yesterday and it didn’t fault once.

I think the problem may actually have been blunt cheap end mills. I used the 1/4” 2 flute solid carbide (uncoated) one from ooznest yesterday and it cut fine. All my failed cuts were using cheap crap 4 flute end mills off eBay. Lesson learned!

Tonight I will up the feed speed and depths and see what happens.

Thanks all for your help.

 

See my previous posts.
Overall what you can try:
Check eccentric spacers, check wiring, check pulley grub screws

 

Hi again
Tried loosening eccentric spacers, it still does it.
Pulley isn’t slipping.
The whole gantry that travels up and down the rails doesn’t look square.
The wheels don’t seem to run true along the top of the exrptrusion.
How might I square this up?
Do I have to undo the belt square up and then reset the belt?
It is still jarring as it travels ap and down the y axis.
Getting frustrated now.

 

Will do
Having watched it moving it is bumping teeth on the belt when moving in y axis.
I think this is the jumping I’m seeing as it jumps a tooth.
It is using gt2 belts.
What might be causing this?
And how might I stop it happening?
Thanks for the help.

 

DONT NO IF THIS IS THE PLACE FOR THIS ?
BUT I BUILD THE OX BUILD BUT I DID 1500X1500 OX BUILD WITCH IS BETTER AIR COOLED OR WATER-COOLED LOOKING AT GETTING THIS 2.2KW Water-cooled Spindle Motor+HY Inverter+Pump+Pipe+Clamp+Collet set+Wrench 607885603656 | eBay FOR MY MACHINE I.LL BE WORKING WITH MOSTLY WOOD PROJECTS....

 

WELL DO U HAVE ANY ADVICE FOR THIS BEGINNER LOOKING TO GO ER20 ..AND THANK U FOR RESPONDING

 

Hi again
I’ve tried all sorts
I’ve checked wheel alignment and pushed the axis up and down by hand and it runs very smoothly.
When under control of laptop and being jogged it jumps teeth.
One end is much worse that the other.
I’ve tried resetting belt tension but it is hard to know if I’ve got it right or not. Tension seems similar to the better side but it still jumps teeth.
What should I try now?
New belt perhaps?
It seems to mesh well when just stood still and belt on x axis which look indentical is fine.
Any help or advice would be welcome what to try next?

 

Would it run with just one belt fitted just to check operation?
Is this good idea or not?
I’ll try replacing belt today.
Would trying to double belt be a good idea?
Would I need to adjust eccentric spacers to accommodate double belting?
Thanks for all help so far.

 

Would converting to GT3 belts be a good idea?
I guess I can use gt3 on y and just reset parameter to suit gt3 belts.
Will try a new belt and see what happens, I do have some spare gt2 belts.

 

If I was to double belt gt3 does it still need 0.5 tape to get spacing right?
Thanks

 

Hi
I’ve ordered some gt2 belt and a gt3 kit with belt and pulleys
Planning on using gt3 on y axis for starters to get it working correctly and then might change x axis too

 

This is where we are now!
GT3 system arrived.
I fitted new pulleys and single belts to the y axis on both sides.
After getting a decent tension and pushing axis up and down by hand which felt pretty smooth I connected up laptop and started jogging it in y axis.
One side is fine which was the good side before the other is still juddering and stuttering.
Belts are not jumping teeth.
Getting pretty miffed off. I haven’t been able to make one cut with it yet.
Any ideas?
Anyone near to Chesterfield in Derbyshire in UK with experience of these machines who could help me?