SoliForum - 3D Printing Community — The ultimate SD4 upgrade thread

Re: The ultimate SD4 upgrade thread

2014-08-30T03:16:34Z

Interesting, thanks!

Re: The ultimate SD4 upgrade thread

2014-08-29T23:08:21Z

Hi eflyguy, Iam slimstar2 . I have had my SD3 since Xmas . the way I tightened up my printer ( X and Y shafts) was to print the heavier pulley mounts found in the forum then drill out the ends of the pulleys with a 5/16 drill bit in a drill press then insert 8 mm x 5mm x 3mm bearings into the pulleys then reassemble as was with original nuts and bolts . I haven't had to readjust belts in months . As for the Y shaft at the back of the case I replaced the bushings with bearings. I just pressed the bushings out with a bolt and nut and some washers,and reversed them to press new bearings in. I did have to polish the rear shaft with a little sand paper and elbow grease to make bearing slide on . I got all to bearings from Bocabearings .com . I haven't had to adjust anything in months and I get nice round circles. As shown in 1 of the pictures I did have to grind just a little off of the X pulley for clearance on the LM8UU bearings I used in Lawsy's carriage upgrade. Last photo was just to show nice clean circles. Hope this helps . And may the force be with you.

The ultimate SD4 upgrade thread

2014-08-29T19:34:48Z

So I'm planning to do what I can to make my SD4 as good as it can be.

I've added a sheet of 3/16 glass, which was secured to the kapton-covered bed (I like the color) with Aquanet. Takes a while to pre-heat but I don't mind. Elmers glue stick has solved any lifting issues.

I'm printing new carriage assemblies ( http://www.thingiverse.com/thing:104059 ) to switch to lm8uu bearings.

Now I'm reading thru the z-axis upgrade threads and not quite sure what the *best* solution is. If I'm going to tear it apart, I'd like to do it once, so which rod should I use? M3 or M5? I've also read about different stepper motors - is that a good idea?

Help me, soliforum kenobi - you're my only hope..