Build Thread- Feed rates for a JGRO

[mcjones22]

I've recently completed a JGRO router table. At present my maximum feed rate is a modest 100 mm/min with a maximum cutting depth of 1 mm for MDF. My motors and electronics are capable of higher speeds however the machine is unable to cope with these high speeds.

I was wondering what other builders have experienced and what can be done to optimise the feedrate.

[silentreaper]

Originally Posted by mcjones22 I've recently completed a JGRO router table. At present my maximum feed rate is a modest 100 mm/min with a maximum cutting depth of 1 mm for MDF. My motors and electronics are capable of higher speeds however the machine is unable to cope with these high speeds. I was wondering what other builders have experienced and what can be done to optimise the feedrate.

What did you use for your threads, did you use a standard all thread or did you use an acme thread with multi starts?

I initially built my Jgro table with the suggested 1/4-20 all thread and was seriously limited as to how fast I could cut, I have since upgraded to acme 1/2-8 2 start and have easily doubled my capable cutting rate now mind you I never spent a lot of time fine tuning the machine either so you results may vary.

[NB70]

What are the exact problems? Do the motors stall or lose steps? Or is the machine flexing at high speeds?