The smallest rail in the BOM allows the tool head to travel left and right.
Required Modification
Trim off one hole. Suggested to use a Dremel & cutoff wheel or a hacksaw. The rail will wind up around 230mm.
Product Details
Don’t lose the balls!
Rails are not pre-lubricated from the factory. Any factory oil prevents corrosion. I highly recommend wiping off the oils with alcohol, and lubricating with Teflon or lithium grease for optimal performance.