Finished my mpcnc and making my first tests.
I trying to cut an mdf wood but i already burn two flute in the process.
1º test was an 3mm flute: is turn black and stop cutting the wood and was result to cnc start to missing steps on the x axis. I was cutting with 20mm/s and Z at 3mm each pass, 20000rpm
2º test was with an 6mm flute: reduced the speed to 10mm/s, 1.5mm each pass and 15000rpm. Cutted more, but after a will same result… The flute tip was black and stop to cut.
The flutes used was the next i buy from china: http://www.ebay.com/itm/321808965777
So far the two test made i broke two flute and i do not know what i doing wrong…
Any idea what can be the problem? bad quality flute? cutting too mutch on the Z?