Direct Geared Belted Extruder V2 - 1,75mm

thingiverse

Direct Geared Belted Extruder V2 - for 1,75mm If you are looking for a bowden version, you should go see my Belted Extruder v.3 for 1.75 instead. Changes from V1 Rotated the Extruder 90 degrees to face forward instead of to the left. Some user have had problems with the left facing model hitting Z-rods etc. I made spacers for that eventuality, but V2 eleminates this issue. New X-Carriage for V2 You are going to need my remixed X-Carriage for Direct Geared Belted Extruder V2 for this Extruder. It is listed seperately as it is a Remix and thus have different licens on it. Photos shows the X-Carriage mouted on the Extruder. Key features Compact highly accurate, easy to use and -install Direct Geared Geared Belted Extruder for all 1,75mm filaments. Gearings 1:3.75 Weight including motor: 320g - This is including motor, all gears, belt, screws, nuts etc.. Please note that a standard normal Nema 17 weights 290g in itself, so 320g is VERY light Only Quality items used for longelevity and better Accuracy. No exotic, hard to find expensive parts used. Set and Forget Idler system - try it! :) Prusa compatible mount hole spacing. Silent running due to belt operation. Mount holes for Optional usage of Expansions. Expansions options Option to mount sensors or other expansion behind hotend. Cooling solution can be mounted on Expansion slots instead of on hotend Opton to mount cable management, Motor-cover, fans and other expansions next to motor. Usage Requirment While this Direct-Drive Belted Extruder 1,75mm (v2) has standard hole mount spacing of 23mm center to center of the mount holes, and you most likely can use it as it is, I recommend you do one of the following, where the first is the preferred option: Use my modified X-Carriage for Direct Geared Belted Extruder V2. Remove 1-2mm of the top-center of your existing Carriage. Use spacer-plate/s to put between your existing carriage and the extruder. Buy one? I am selling these. Also just the metal parts. Drop me a message if interested. I live in Denmark and can ship for DKkr 35 in Denmark, but let me know where you live, and we'll see. 3D model and files? I do not offer up the extruder in other fileformats than STL, but you can see the model on MyHub on Autodesk's servers. Print Settings Printer: CrossBot My Version Rafts: No Supports: Yes Resolution: 0.2mm max Infill: 25% or more Notes: I have provided 2 models: 1 with support and 1 without for people who'd like to setup support on their own. Other Settings 3 Borders/Perimeters. 3 Top/Bottom -layers or more. I have printed in PLA and PETG without resize modifiers in slizer. If you use ABS you might need to enlarge your object in the slizer. How I Designed This I used Autodesk Fision 360 There is a common misconception that Autodesk Fusion 360 costs money, but it truely is totally free to use for private people and small businesses and not just students and teachers. Once installe you are asked to accept the licens and just put in you are private person or small business as appropriate. Once a year you have to re-accept the licens. Also check out their free app for phones and tablets which can be used to view and share your items. BOM 60GT-2 Pulley 16GT-2 or 20GT-2 Pulley. E3D Hobbed Bolt - Hobb-Goblin-8mm-Shaft. 172-GT2 Belt. 0-1x m6 Push-Fitting for 1.75mm filament. 2x 20mm steel springs. 1-1.2mm thick. 3x 608 bearings. 8x22x7 - Type doesn't matter. Various m3 nuts, screws and spacers - Details below Detailed Screwn/Nut BOM 13-17x M3 nuts (if using cable management or motor-covers) 4x m3 spacers - Fasten Motor 4x m3 8mm - Expansions bar. 4x m3 10mm - Fasten Motor. 3x m3 16mm - Hotend Fastener and Idler. 2x m3 25mm - Idler and Spring Frame joints. 2x m3 50mm - Socket Head Screws, Partially Threaded. 4x m4 - Lock-nuts Addons Everything for my Belted Extruders, including Mounting brackets can be found in the my Collection: Belted Extruders by Dintid Addons are trickling in, so hit follow or just check back now and then :) Calibrate Steps/mm A few stepper examples. Remember to do a proper measurement yourself. I have rounded the numbers up/down. When using: 16-GT2 + 60-GT2 pulleys + 1/32 multistepping + 0.9degree motor = 2050 steps/mm 16-GT2 + 60-GT2 pulleys + 1/16 multistepping + 0.9 degree motor = 1025 steps/mm 16-GT2 + 60-GT2 pulleys + 1/32 multistepping + 1.8 degree motor = 1025 steps/mm 16-GT2 + 60-GT2 pulleys + 1/16 multistepping + 1.8 degree motor = 510 steps/mm Insert m3 nuts into the two parts. Insert Spring Tightener part and the springs. Assemble the rest and make sure the m3 screws are FLUSH with the bottom of the Spring-frame Custom Section Choosing stepper motor This can be a complicated step unto itself. I am using a 0.9 degree Nema 17 on a 32bit 24v platform. It works very nicely. If you are using a 12v platform, and especially if your 12v platform is an Arduino Mega or other 8bit controller, you should look at a 1.8 degree motor instead. The motor I am using: I am using Nema 17 "pancake" as in flat model. Manufacturer Part Number: 17HM08-1204S 0.9deg Nema 17 Stepper Motor 1.2A 11Ncm / 15.6oz.in / 1.12Kg.cm 42x42x20mm I found it on german ebay. You can reuse whatever Nema 17 you might have, but using a smaller motor dramatically decreases the weight. Picking a nema 17 1.8 degree motor Look for a motor between 1.2 and 2amp with 15Ncm / 21oz.in / 1.5kg.cm Doing it the scientific way: If you want to do it the scientific way, you should head over to Duet3D and read their piece on Considerations when choosing stepper motors. Metal Parts (refer to BOM for precise listing) Do not skimp on Hobbed Bolt. Right one is E3D.. other one is from respectable local shop... Just go E3D. Measurements to create Extensions