Kossel Pro Fan Part Fan Upgrade

thingiverse

UPDATE: I have uploaded a base for a 35x35x10mm fan (fan_adapter_base_35.stl) and renamed the base for a 30x30x10 fan to fan_adapter_base_30.stl. This is a fan upgrade for the Kossel Pro delta printer or the Kossel RepRap variant that uses the same stock effector. The stock effector uses (3) diminutive 10mm 5V fans; (1) for the hot end and (2) for part cooling. Sadly, while the fans are adequate for most smaller prints, larger prints with small areas will need to have the fan settings adjusted to get it to print well. In fact, you have to run them wide open most of the time. However, there is a solution: use bigger fans! This thing is an adapter to mount (2) 30x30x10mm 5V radial fans to replace the two smaller axial fans. With this upgrade, you no longer have to run the fans wide open to get decent prints for parts with smaller details. Print Settings Printer Brand: SeeMeCNC Printer: Rostock MAX Rafts: Doesn't Matter Supports: No Resolution: 0.30 Infill: 20% Notes: Print with ABS. PLA will become soft on longer prints. Clean all parts and test fit them before assembly. Post-Printing Installation - moderately difficult Parts Needed: (2) 30x30x10mm 5V fans: yes, 5 volts. (2) 1.5x15mm bolts (2) 1.5mm nuts zip ties (optional) googly eyes (optional) Notes: The best way to install these is to remove the effector and the hot end. You will need to get inside the effector to get to the small nuts that hold the fans. You could invert the arms but I don't recommend that as you are sure to drop one of the nuts into the effector. Having it out of the machine will allow you to rotate it to allow the nut to drop out. Be sure to test fit the fans to ensure they fit into the base snugly and that you can insert the bolt to hold them in place. Use a small parts tray to keep track of the smaller bits. Unload the filament. Allow the hot end to cool. Power off the printer. Remove the hot end. Place it aside and wrap a cloth around it to protect it. Disconnect the wire loom to the effort. Move the wire loom to the side and out of the way. Disconnect the delta arms at the effector. You do not need to remove the arms themselves. Be sure to capture the bolts, grommets, and any bearings that drop out. Set these aside. Place the effector on a static free cloth or on a workbench with a lip (to keep those pesky small parts from rolling away). Remove the two 5V axial fans and disconnect the wires. Remember which one is the red (positive) wire! Just loosen the bolts for the wires - don't remove them completely. Install the fan adapter risers in place of the fans. For this you will need needle nose pliers to hold the nuts in place. It's a bit tricky but you can do it with some patience. Install the new fans in the base. Use the 1.5mm bolt and nut to secure them. Coat the top of the riser and the inside of the base where the riser fits with a generous amount of acetone using a small brush or similar applicator (but not enough for it to run all over - be careful there!). Wait about 5-10 seconds then press the parts together, orient them as shown in the photos, and hold them for about 30 seconds until the acetone evaporates. Thread the wires for the fans through the same holes from the old fans, cut the wires to length and connect them. Install the effector. Be careful not to over tighten the arm bolts. Note: this would be a good time to install shims to correct the bolt length issue if you've been wanting to do that. Reinstall the hot end. Reconnect the wire loom and PTFE tube. Zip tie the loose ends and apply googly eyes (optional). Power on the printer and load the filament. (optional but highly recommended) Calibrate your printer. Change the settings in your software to lower print fan speeds on first layers (they're way more efficient now and may cause problems if turned on 100% on first layers). How I Designed This Designed with Openscad If you find other sized fans (you can use up to 35x35x15mm fans but not much larger - no room), let me know and I'll make and upload a version for you.