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Cnc minimill |
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chipenter:
I have changed the stepper driver for the Z axis for a 3.5 amp one , set at 2.5 amps has enugh power to dive the Z without dropping steps at last , also bought and fitted a speed controle for the spindle , and a shelf on the power supply for the screen , had to fit a fan over the board as it was overheating a dropping steps ( themal overload ) . |
chipenter:
At long last I have solved the issue of the negative movements not working , Marlin is made up from over 120 small programs , and it has taken me weeks to find " enable sofware endstops " once I got rid of them the maching worked as it should , but I havent found a way to set the speed of fast moves from the screen , I ran a program to cut a small clock dial and had a bo bo , no feed speed on the first line and the stepper just howled with no movement , this was a clearence move processor thinks its moved up 3mm next line puts a cut of 1.5mm on , results in a 4.5mm cut lots of dust but it cut well no droped steps so I let it run , just as well I was using 10mm MDF for the test . |
chipenter:
Found another setting , #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing , why risk damage by having this set as default ? having disabled this the print will stop and a message will say press to continue or reset to abort iff an endstop is hit . |
chipenter:
I have found the speed controle for the screen , it was listed as ( 50*60 50*60 40*60 60 ) witch is 3000mm per minet if I changed the 60 this was ignored , finished with 1*60 or 60mm per minet I now no longer need my laptop to set up . :thumbup: |
chipenter:
This morning I broke the tip of a BS1 centre drill before I threw it in the bin , I looked and saw it had some rake on the futes , ground it in my engraveg relife tool and a test cut on cast brass plumbig fitting worked , nice clean lines apart from its not in the centre I am pleased with the result . |
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