CR10 linear rail bed plate carriage

thingiverse

NOTE: This piece was designed to work with TWO 2020 extrusions that are cut to an EXACT length to fit BETWEEN the front and back 2020 extrusions on the CR10. I used a 80 tooth Diablo table saw blade that is made for cutting aluminum. I DO NOT RECOMMEND THIS PARTICULAR MOD UNLESS YOU ARE EXPERIENCED WITH A TABLE SAW or can get someone else to cut the 2020 extrusions for you. You could try this mod with no supporting 2020 extrusions under the linear rails BUT I WOULD NOT RECOMMEND THAT MYSELF. I made this linear rail bed plate carriage when I decided to add two 550mm MGN12H linear rails to my CR10. When I ordered the linear rails, each linear rail came with ONE carriage block. I ordered 2 extra carriage blocks (MGN12H), as you need a total of 4 carriage blocks. ........ NOTE: I used a Dremel with a cutting wheel to cut the 2 stainless steel linear rails to the desired length (so they would not extend past the frame). I designed this linear rail carriage plate to keep the stock CR10 bed carriage plate at/near the stock height (at least on my printer). There is a place on the back middle/left for an M4 screw that allows you to adjust the position of the bed (as this screw hits the Y end stop). Just adjust the depth of the screw to get the bed to stop where you need it to stop. WARNING: Be careful that this carriage does not hit the front center belt bracket when you have the Y position at 300 (bed all the way to the front). I used SIX M5 screws with washers and lock nuts to attach this carriage to the stock bed plate using the 6 stock wheel mounting holes. If your bed doesn't have the 6 wheel holes then this part may not work for you. NOTE: You MUST connect this linear rail mounting plate to the four linear rail carriages using four M3 screws on each carriage BEFORE you attach the stock bed plate with the six M5 screws. I am sorry that I don't have the screw lengths that I used. You will have to figure that out once you print this carriage plate. I hadn't planned to publish this but I am adding this to Thingiverse by request. I admit that it's a little hard to get the middle M5 screws in place so you could skip those if you wanted too. I added a printable tool that I used to help hold the lower nuts in place as I tightened the M5 screws from above. The linear rails that I used where the more expensive Hiwin rails BUT you can use the cheap Chinese ones that you can find on Aliexpress or Amazon. They will work fine, as I used that kind on my X axis (hot end) linear rail setup. I did take the carriage blocks apart and cleaned and lubricated them before I used them. I also ordered some extra chrome ball bearings (100 3/32" Inch Chrome Steel Bearing Balls G25) in case I lost any when I took the carriage blocks apart. They ended up sliding very nicely. I can't speak to their long term durability though (of the cheaper Chinese linear rails). You will also need EIGHT aluminum 2020 corner braces, similar to the ones in my photos.