[kstrauss]

Yes, the RapidTurn is rather tight on my 770. However, with the 1100 you have to reprogram the VFD to change from mill mode to RapidTurn mode. This is not required on the 770.

Poly-V is quieter than the link belt on the 1100 (at least that is my understanding)

Higher spindle speed is great if you use small cutters. You could get the high speed spindle for the 1100 but changeover is a pain.

A larger work envelope is always good to do large parts or to run multiples for production.

Just a few thoughts...

[thunderdork]

hmmm... that's good to know about re-programming the VFD.

[thunderdork]

Why is it the VFD has to be reprogrammed and is that everytime you switch out? Also, what do you think the smallest cutter on the pcnc 1100 should be? And whats the max length you are able to work with on the 770 with the Rapid Turn setup?

[kstrauss]

The 1100 has a 1.5hp motor and the RapidTurn has a 1hp motor (the same as the 770) so no changes are required when switching between the 770 and RapidTurn. I have added a switch so that both motors can be cabled at the same time and I can easily switch between them. I believe that I posted some photos here.

The maximum length depends on where you position the RapidTurn (fully on the table or off the left end of the table). I need to do some measurements to accurately answer your question. Realistically only rather short work can be turned without a tailstock regardless of the maximum length that can be mounted..