Project MedusaHC Part 2 — DIY toolchanger (hotend-changer): Hardware Explained

In this video, I continue the story of my super-budget toolchanger project — MedusaHC. Today I'll cover the latest project news, walk through how the hardware side of MedusaHC is built, and answer the most frequently asked questions about the project. The software side didn't fit into this part, so I'll cover how the macros and scripts work in the next episode — I'll do my best not to drag it out. MedusaHC on Github https://github.com/Irbis3D/MedusaHC MedusaHC manual (still in progress) https://drive.google.com/file/d/1KkSG... Duender on Github https://github.com/Irbis3D/Duender Duender Manual https://drive.google.com/file/d/1r_e_... If you like this project and want to help its development, I’ll be very grateful for your support and any donations. My Patreon:   / irbis3d   As well as a link for regular donations. Thank you in advance. https://buymeacoffee.com/Irbis3D _____________________________________________________________________ Irbis3D Discord server:   / discord   _____________________________________________________________________ Useful links: BIGTREETECH Manta M4P M5P M8P Motherboard: https://s.click.aliexpress.com/e/_okt... BIGTREETECH SKR MINI E3 V2.0 32Bit Motherboard: https://s.click.aliexpress.com/e/_oD8... BIGTREETECH SKR MINI E3 V3.0 32Bit Motherboard: https://s.click.aliexpress.com/e/_olr... BIGTREETECH CB1 and PI4B Adapter https://s.click.aliexpress.com/e/_oD7... BIGTREETECH SKR V1.4 Turbo 32 Bit Motherboard: https://s.click.aliexpress.com/e/_oDw... BIGTREETECH BTT CB2 and Pi 2 Control Board https://s.click.aliexpress.com/e/_oDM... BIGTREETECH TFT35 SPI V2.1 Touch Screen 3.5inch https://s.click.aliexpress.com/e/_olB... (edited) GT2 Belt 6mm https://s.click.aliexpress.com/e/_ooD... Aluminum Profile Connector Set - 40pcs Corner Bracket + 80pcs M5x8mm Hex Socket Cap + 80pcs 20 Series M5 T-slot Nut https://s.click.aliexpress.com/e/_omY... MGN rails from Magic Dragon- very cheap, the quality isn’t great, but it’s acceptable. Like with all cheap rails, there’s always a bit of a lottery involved. https://s.click.aliexpress.com/e/_oCJ... https://s.click.aliexpress.com/e/_oFY... V-Slot aluminum profiles from Magic Dragon are also some of the cheapest on the market. I haven’t tried them myself yet, but a friend ordered some and was completely satisfied. https://s.click.aliexpress.com/e/_oon... 10pcs GT2 Idler Pulley 20 Teeth 16 T Bore 3mm 5mm https://www.aliexpress.com/item/32568... NEMA14 motor — cheap and simple, but it seems to work without problems. https://s.click.aliexpress.com/e/_c4N... GT2 pulleys for XY motors. If I am not mistaken, these pulleys are 20 teeth, not 16. Size: 20Teeth 5MM https://s.click.aliexpress.com/e/_c4m... M3 16T idlers (with teeth and smooth) https://s.click.aliexpress.com/e/_c3F... M3 pins — I also bought them as a kit https://s.click.aliexpress.com/e/_c4C... M3 0.5mm spacer washers https://s.click.aliexpress.com/e/_c4B... M3 10mm spacers https://s.click.aliexpress.com/e/_c3r... Hotend — P1P clone, also one of the cheapest options, but the quality is quite acceptable. I have ordered many of them and have not encountered any problems. https://s.click.aliexpress.com/e/_c3y... Sherpa KIT — I bought this kit with hardened gears. It is cheap, but the quality is acceptable. https://s.click.aliexpress.com/e/_c4k... 3010 fans — for the hotend, a super high-end fan is not required. The main thing is that it is not noisy. I use two types. More expensive — from Trianglelab https://s.click.aliexpress.com/e/_c4U... Cheaper — no name https://s.click.aliexpress.com/e/_c3Y... 4010 fans — better to buy good quality and very fast ones. I use these: 24V B 12000RPM https://s.click.aliexpress.com/e/_c3e... 3D Printer T8 Lead screw rigid shaft coupler https://s.click.aliexpress.com/e/_okS...