CR-10s pro Direct drive conversion

thingiverse

I love the direct drive mod on my Ender 3 and I wanted to do the same for my CR-10s Pro. Since I couldn't find a direct drive conversion on Thingiverse, I used parts from a Hero_Me conversion kit and made one myself. It turned out really well and has been running great for over a month, almost around the clock. The conversion is not an easy thing to do and I would recommend having some experience with splicing and soldering wires to extend the extruder and runout sensor wires to reach their new locations. It's also a bit tricky to get the extruder and stepper mounted. The original design still requires a small piece of bouden tube between the extruder and hot end, so I left a 3-inch piece and trimmed it to fit as I assembled it. The LED light strip was designed to fit on the fan duct, but it didn't fit, so I trimmed off the excess and glued it to the front of the cooling duct. The original design is for the stock hot end, and it fit and worked perfectly fine; now I have a microswiss all-metal hot end and it still fits and works great. One of the first things I did to my printer was convert to a BlTouch sensor. This whole thing was tested with the BlTouch. I've included models that I think will work with the original stock sensor, but I don't have any way to test them. I remember one problem with the direct drive model - the two holes that are supposed to line up with the old sensor mount holes are slightly off, but I don't remember which direction, so I haven't fixed it. You can ream them through with a drill if you choose to; I didn't because I'm not using those two holes anyway. I also drilled one hole to secure the hot end wires, and that hole has been added to the model. I used 2x 608 stake board bearings and 2ea. 4mm screws and T-slot nuts for the filament guide/sensor mount, assorted 3mm screws and nuts for the extruder assembly and fan mounts. Since it's been a while since I put this together, I don't remember exact quantities and lengths, and I don't want to take it all apart to find out; but I've listed below where I got the parts. Disclaimer: I'm not a pro at this kind of thing and have limited time to work on it - it's taken me three months to get to what I have now. I used models from other creators and built my direct drive around them. I extend special thanks to the creators of the things I used to come up with my direct drive unit. Please visit their things - you might find something you like better... Sources: Hero_Me source parts: https://www.thingiverse.com/thing:3433619 Fan duct: https://www.thingiverse.com/thing:1662879 Light strip mount trimmed and glued to front: https://www.thingiverse.com/thing:2946454 Roller for filament guide 2x: http://www.thingiverse.com/thing:3052488 Recommend cable support: https://www.thingiverse.com/thing:3490047 Extra parts, nuts screws ect. came from these sources that I had purchased from Amazon for other projects: Ball Bearings for filament guide rollers, $9 for 20: "608ZZ 8 x 22 x 7 mm Deep Groove Ball Bearing, 20 Pcs Double Metal Shielded" 3mm Nuts and Bolts kit: $19 for 600 pcs set "iExcell 600 Pcs Metric M3 DIN912 Stainless Steel 304 Hex Socket Head Cap Screws and Nuts Assortment Kit" T-slot nut and screw set $9: "Eowpower 90Pcs 20 Series M3 M4 M5 Hammer Head Drop in T Slot Nuts"