CNC Router User Man (Unregistered Guest)
10-30-2005, 01:24 PM
Just a few minutes ago, I cut two arcs in MDF from the same Artcam drawing, one inside cut, one outside cut. The two pieces don't mate perfectly... there are slight gaps along the 30" arc length (18" radius), some small, and some as big as 1/32". I am using a porter cable router in a non-alpha PRT.
What do you think this inaccuracy can be attributed to? The non-closed loop motors? Deflection by the router and bit? Overall slight inaccuracy of the machine?
It's not too big of a deal at this point in time. This PRT is just a "starter" machine for me that I bought mainly to see if a CNC would be the right tool for my shop. In the future, I would like a machine that can cut the parts dead-on. What kind of a machine can do that for me? I understand that a Komo Mach One could probably do it, though I'm looking at a $135K price tag (can you say business loan?). Would a Techno or Multicam router offer the kind of accuracy I'm seeking?
What do you think this inaccuracy can be attributed to? The non-closed loop motors? Deflection by the router and bit? Overall slight inaccuracy of the machine?
It's not too big of a deal at this point in time. This PRT is just a "starter" machine for me that I bought mainly to see if a CNC would be the right tool for my shop. In the future, I would like a machine that can cut the parts dead-on. What kind of a machine can do that for me? I understand that a Komo Mach One could probably do it, though I'm looking at a $135K price tag (can you say business loan?). Would a Techno or Multicam router offer the kind of accuracy I'm seeking?