GT2 Belt Tensioner

thingiverse

My Second Attempt at Remixing Microcut's Belt Tensioner. The Idea Was to Rotate the Main Body 90 Degrees Along the Y Axis, Resulting in a More Streamlined Design for Smaller Foot Print as the Original Would Have Continuously Gotten Clipped by the Carriage on My Rostock Mini Pro. I Successfully Reused the Original Loop and Tensioning Knob from Microcut's Design for Convenience. I Haven't Yet Tested the New Design as I'm Waiting to Replace Some Other Parts on Printer, Since It Will Require Longer Belts Than Currently on Board. Overall, I Am Happy with the Results of My Test Prints, Which Were Too Tight Due to Poorly Calibrated Filament That Was Over Extruding. UPDATE 04-11-2016 Reprinted the Design in a Silver PLA That Has Been Performing Much Better for Me. Realized That the Hole for the Belt Tensioning Knob Was Still Too Tight, So I Reduced the Wall Thickness on Either Side from 2mm to 1.5mm, Extending the Height to 7mm Without Changing Any Other Dimensions. Unfortunately, I'm Not Sure If My Changes Will Work Out. Adjusting the Tensioner Knob Seemed to Tighten One End of the Model or the Other Rather Than Drawing the Ends Together to Tighten the Belt as Intended. One End or the Other Needs Secure Fastening for It to Function Properly. I Flagged the Model as a Work in Progress, Uploading V2 of the Tensioner Body Along With Fusion 360 Archive Files, IGES Files, and STEP Files Incase Anyone Else Wants to Iterate on the Design. UPDATE 06-02-2016 Finished the Remix, Following the Function of the Original Design Much Closer So the Tensioner Would Work Correctly. It's Working Great on My Printer, Allowing Belts to Be Much Tighter. The Fit Passing My Carriage Is Closer Than I'd Care for, But Seemingly Works Fine. UPDATE 06-04-2016 Final STLs, Fusion 360 Archives, IGES Files, and STEP Files Should Now be Loaded. Smallest Hex Bolt Found Was 4mm with a 7mm Head, So Designed Around That. A 20mm Length Should Be More Than Enough for the Tensioner. I Just Used 3mm x 10mm Screws for the Side Bolts, Originally Planning to Cut Down Some 3/16" Threaded Rod But Using Screws with Super Glue Was Easier. Sadly, the Final Design Does Require Support Generation. tensioner_body_v3 tensioner_loop_v2 tensioner_knob_v2 belt_loop (need 2x)