RB1 Part Cooling Duct - For Low Profile v2-1 Bearing holders

thingiverse

This is the highly effective Rigidbot single extruder part cooling fan duct modified to fit over the v2-1 low profile bearing holders found here: http://www.thingiverse.com/thing:430288 NOTE: Use calibrated filament using the clip method found linked below for best results: http://www.thingiverse.com/thing:1037301 It can be used on the original Rigidbots (RB1's and RBB's) as well as the newer Reliabuild 3D printers (RB3 and RBB3). Cura scaled and oriented for printing. The duct blows across the nozzle tip parallel to the part surface to avoid heater block temperature fluctuations. Requires no additional hardware to mount the duct. Only the one bolt needs to be removed and it will counter sink back into the hole to lock the fan mount in place. Clears the bed by 2 mm and does not touch the rails. Print Settings Printer: Rigidbot 2 Rafts: No Supports: Yes Resolution: 0.1 mm Infill: 24% Notes: Turn on a brim of at least 10 lines to hold the small part of the print that will touch the bed in place. I turn the support material up to 30% and use touching the build plate. Prints in less than 3 hours. Post-Printing Hole cleanup. To round out the hole for the bolt to be captured in you can put an M3 bolt in a drill and ream it out. See the picture. If using an old style stamped carriage you may have to file off the lower edge burr on the edge that is produced by the manufacturing method. If using the newer milled carriages it will fit perfectly.