Bests & Worsts Reviews from Amazon

I have torn my primary 3D printer down to replace the rails. These are not the cheapest rails available but they are certainly economical. They are very rough and packed with shipping grease from the factory. At first I thought they would be unusable. Begin by spraying the entire rail and block assy with Brake Cleaner. This will get most of the gunk off. Then remove one of the red retainer buttons, hold the rail upside down, and over a towel or thick rag, carefully slide the Carriage Block off. I would then spray the bearings and block again with Brake Cleaner. At this point you have a choice - go with the original ball bearing or swap them for better quality. I ordered two sets of https://www.amazon.com/gp/product/B015RKOZ7G/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1 precision ball bearings. I took out the originals and replaced them with the SAME NUMBER of the replacement balls. I then sprayed the inside of the block with Super Lube 31110 (Spray) and worked the balls round the track. The then put a small amount of Super Lube 92003 Silicone Lubricating Grease on the balls and track. (Believe me, the 3 oz tube will last for years!) I sprayed the rails with the Super Lube spray and wiped them down with a clean cloth. Then I reassembled the block onto the rail. Swipe the block back and forth and it should be a smooth as can be. Please click the "Helpful" button below