CNC "Oops"

Mistakes happen, ever try to run a cnc during a thunderstorm? Bad idea. Static discharge from dust collection. Bad results. White noise, I still don’t understand that one but it’s bad. Trip over the power cord unplugging the operating computer while running bad. Forget to x y z zero bad. But with all that said cnc sure is fun and a challenge and I wouldn’t want to woodwork without one. Dan Nelson Nelson Woodcrafters

-- nelson woodcrafters

started without homing? the machine didn’t know where it was and went to the first line of code.

You can flip the damaged track over and no one will ever know… ;-p

-- He who dies with the most tools... dies with the emptiest wallet.

I put a sacrificial piece of MDF right on top my CNC bed just for this reason. Cheap and easy. If you ar concerned about how flat it is, make up a flatteniing routine tool path with a large straight bit to flatten the MDF bed.

-- DJG

Dan, We’ve had our fair share of mistakes… I myself have forgot to xyz zero a couple times.
REO, I think you may be right, but the machine is usually able to seamlessly pause and resume.
NiteWalker, That’s actually a brilliant idea!
djg, Another good idea. We’ve been running this thing all day for nearly every school day since September. I’m surprised this is the first big mistake. I’ll mention it to the class. Flattening a big piece of MDF would be more accurate than the current top, as it is slightly out of flat in the middle.

-- Tristin King -- When in doubt, sand it.

I use a flattening routine to even out the hills and valleys with respect to the gantry. No matter how much sag you have, this will fix it.

-- DJG