Inventables Community Forum

Cutting larger than entered

setting up my PROVer4030, machine was cutting well and now the cuts are drastically larger. Cut a 40mm x 40mm pocket and ended up with a 62mm x 62mm pocket. Tried again a bit larger with different shapes and doing the same every time. Tried with different bits and still the same. Bits are entered correctly but have no clue why all of a sudden this is happening, please help.

Most likely your $100 and $101 settings are wrong and this throws the x and y movements put of calibration.
The default settings for the 4030xl can be found here: