Prusa I3 Pro B Frame brace with front plate

thingiverse

Frame Brace with Front plate. Attention: Build volume in the y axis is reduced by about 5mm, so add this reduction to your firmware accordingly. I've also made it compatible with the Anet A8 Y belt tensioner because I think it looks nice. The belt tensioner isn't mine; I only remixed the belt holder/tensioner. The bolt and plate are from Audiogod. The CTC Prusa I3 Pro B comes with a belt tensioner that uses 8mm ball bearings. The belt tensioner and the idler pulley are compatible with those parts. Be sure your printer is properly calibrated before printing this thing. My printer actually printed it 1.5% smaller than necessary, making it unusable because it bends the y-axis rods. UPDATE: I have improved the GT2 idler pulley; now the belt stays in place as it should be. This part must be printed with supports. UPDATE: The M4 version of the idler pulley and belt tensioner has been added. Use a 4mm drill to enlarge the holes if your printer makes them too small. Remember that either the M4 screw or the idler pulley should rotate freely. Also, the screw shouldn't be larger than 34mm; I recommend using a 30mm M4 screw.