Z Axis belt being loose

Hi guys,

Not sure if this has been answered or not but I am having trouble with the belt on my z axis.

Currently when I throttle my z axis up and down it slips as the belt (as it seems to me) is too loose. I cant find any documents on how to tighten it as you can with the Y and X. This makes the carves come out too deep as it looses its depth range. I created a clamp system to apply pressure thus making it tighter and it solved the problem. I obviously cant keep using the clamp as it will eventually burn out.

Does anyone have any answers on this? Is there a way to adjust the tension of the belt or does this seem to be a design flaw? Any help would be appreciated.

Anthony.

Feel like an idiot I didnt see this before. Thanks

I know this is a little late, but did you figure this out? Mine has the same problem…

Have you moved the Z-motor as far as the adjustable range allow for?

http://x-carve-instructions.inventables.com/500mm/step4/

I’ve tried this method of moving the motor slightly to tighten the tension on the belt of the top motor …… works fine until moving to the next carving point . The motor or belt just keeps slipping so the tool is not out of the way of the work piece when move to next position . Getting quite frustrated as well and noticed the motor is getting mega hot too .

Any ideas please ?