Hi all RepRappers
also a Canberra RepRap Mendel owner, have had it up and running for about a year now, only found this forum today (googleing something else and found this)
calibration, its a trick, lots of things to get right. the way I did it in the end for the x-y was us maths, there is a formula to find steps/mm, off the top of my head standard setup for the mendel is 80 for both x-y, if you find that you use the correct steps/mm found from the formula (found in the calibration forum) gives you incorrect sized prints, the issue is something else. look for binding, loose belts, over tight belts and lash. for the z I used a similar method to calibrate the extruder
attached (I hope) is a pic of an idler I printed for my t2.5 belt, the teeth are .7mm diam, and the centre is a press fit for an 8mm bearing [attachment 20724 idler.jpg]
hope this helps
cheers Widget
also a Canberra RepRap Mendel owner, have had it up and running for about a year now, only found this forum today (googleing something else and found this)
calibration, its a trick, lots of things to get right. the way I did it in the end for the x-y was us maths, there is a formula to find steps/mm, off the top of my head standard setup for the mendel is 80 for both x-y, if you find that you use the correct steps/mm found from the formula (found in the calibration forum) gives you incorrect sized prints, the issue is something else. look for binding, loose belts, over tight belts and lash. for the z I used a similar method to calibrate the extruder
attached (I hope) is a pic of an idler I printed for my t2.5 belt, the teeth are .7mm diam, and the centre is a press fit for an 8mm bearing [attachment 20724 idler.jpg]
hope this helps
cheers Widget