After a lot of troubleshooting and adjusting (took quite some time to figure out that erratic movement of the x-axis was due to a faulty connector on the x-axis wiring), I was finally able to produce the first prints. Hurray!!! The very clear manual, this forum and the wiki provided lots of help!
I am amazed by the print quality so far. I just finished printing the x-y adjustment tools and they look really good!
There is one problem. Two of the pulleys didn’t like the frequent fastening en loosening of the set screws during calibration. The screw holes are damaged so these two pulleys are now kept in place with only one set-screw. I would like to know were I can obtain replacement pulleys. The printer works fine but I’m not sure how long the pulleys will hold with only one set screw.
Just a word of warning for fellow builders: I used two of the m3x5 set screws for the x and y motor pulleys (should have used the m3x4) so I came two of these set screws short for the pulleys on the 8mm rods. Instead I used the m3x4 set screws. This seems to work but it is quite easy to damage the screw hole with these set screws, especially because you might have to fasten and loosen them a few times during calibration.
The fastest and easiest way to fix your problem is probably to buy a suitable drill bit and a M3 thread tool and make new holes.
Btw I only use one screew in each and that is not a problem so far.
Good to hear that the pulley seems stable with only one screw. So far I am very pleased with the calibration so as long as the pulleys stay in place I will leave the setup as it is right now.
[quote=“Bruno Montagne”]i printed this and its works
http://www.thingiverse.com/thing:661111[/quote]
Indeed but it takes an awful lot of place you don’t really have. You’d need to reverse the pulleys but then it’s near to impossible to lock them on the shaft.
[quote=“Bruno Montagne”]Can i replace polley by 220 teeth and 218 teeth. [/quote]You’d have to replace the belts too including those from the motors and modify the corresponding values in the firmware (or the EEPROM).
[quote=“SlowFoot”][quote=“raby”][quote=“Bruno Montagne”]i printed this and its works
http://www.thingiverse.com/thing:661111[/quote]
Indeed but it takes an awful lot of place you don’t really have. You’d need to reverse the pulleys but then it’s near to impossible to lock them on the shaft.[/quote]
You could make a shorter one and let the screws go through the damage holes, you will have to drill out whatever is left of the treads. Looks like it is a bit tight so you might have to file down a corner on the nut to get close enough to the flange.[/quote]
I don’t have any loose pulleys so I can not see how they fit. You will probably have to glue them on the pulley, so they have to fit tight. If they are to small you can scale them up a little, if they are to large I will have to make new, if you scale them down the nuts will not fit.[/quote]
