CR10 linear rail bed plate carriage

thingiverse

I designed this mod to work with two 2020 extrusions that fit exactly between the front and back 2020 extrusions on the CR10. I cut these extrusions using an 80 tooth Diablo table saw blade made specifically for cutting aluminum. I do not recommend attempting this mod without experience working with a table saw or having someone else cut the 2020 extrusions for you. You could try installing the linear rails without supporting 2020 extrusions under the linear rails, but I would not advise it myself. When I added two 550mm MGN12H linear rails to my CR10, each rail came with one carriage block. I ordered two extra blocks (MGN12H) since a total of four blocks are needed. To prepare the stainless steel linear rails, I cut them to desired length using a Dremel with a cutting wheel so they wouldn't extend past the frame. This linear rail carriage plate maintains the stock CR10 bed carriage plate height at/near its original level on my printer. There is a spot on the back middle/left for an M4 screw that allows you to adjust the bed position, which hits the Y end stop. Simply adjust the depth of this screw to achieve your desired bed stopping point. Be cautious not to let this carriage hit the front center belt bracket when the Y position reaches 300 (bed all the way forward). I secured this carriage to the stock bed plate using six M5 screws with washers and lock nuts through the six stock wheel mounting holes. If your bed lacks these six holes, this part may not work for you. You must attach this linear rail mounting plate to the four linear rail carriages using four M3 screws on each carriage before securing the stock bed plate with the six M5 screws. Unfortunately, I do not have the screw lengths used in my print. You will need to determine these once you print this carriage plate. I initially didn't plan to publish this design but added it to Thingiverse by request. It can be a bit tricky getting the middle M5 screws into place; if needed, you could skip them altogether. I included a printable tool that helped me hold lower nuts in place while tightening the M5 screws from above. The linear rails used were Hiwin rails, which are more expensive. However, you can use cheaper Chinese alternatives found on Aliexpress or Amazon and they will work fine, as I did with my X axis (hot end) linear rail setup.