Now that all the axis are complete, we can install the endstop/limit switches. These are simply a switch which is triggered mechanically by one of the printers moving parts hitting it, be it the hotend, print bed etc.
Following on from the x-axis build – I skimmed over the last part, just “installing with the z-axis rods and threaded M5 screw”. This post helps to expand on this part, installing the x-axis and carriage onto the printer with the installation of the z-axis smooth 8mm rods and the z-axis screw – which for this build is the standard M5 threaded rod. Read on!
Building one of the more complex parts of the P3Steel which hosts the hotend carriage and connects the x and z travel together. Read on for a detailed breakdown of the x-axis setup and installation.
Either by fault of my own or tolerances in the steel rod or frame after successfully wiggling and inserting the rod, they did not fit snug and were not tight enough, This caused the rods to move as the print bed went back and forth. I did not want any possible movement in the rods, so investigated Thingiverse for a simple clip bracket to hold the rods in place at each end. A couple of minutes later and there was a simple little bracket design by user Hobsie which looked perfect and resolved the issue.
Y-Axis Carriage Now that the clamps are sorted it’s time to fit them to the blank y-carriage, as seen below. The 2.5 DXL frame uses four points to fasten bearings, some holes in the middle for the y-axis belt tension block and the bed screws holes at each corner. The middle “sticky-outy” part seen below … Read more
Bronze Bushings or LM8UU Bearings The standard Prusa builds (and most other 3D Printers, CNCs, engravers etc) use LMU88 linear bearings for all linear rod movements. They are the go to part when you use 8mm smooth rod as your axis guides and are cheap, easy to use and readily available. The quality of these … Read more
The steel frame of the P3Steel could easily scratch up any surface it sits on, and vibrations and movement may be translated down through it’s legs. I am building the printer on a table, so was very aware of scratching it(!) A look on Thinkgiverse shows a lot of different feet for the printer, but … Read more
Part of the frame assembly (or just after) is to fasten the y-axis motor mount and belt idler. They sit either side of each other at the two ends of the printer frame. This is where this 3D printers starts it’s path away from the standard version and takes on Toolson’s upgraded and improved parts.
Over the weekend while browsing through AliExpress for my usual random electrical stuff I came across two new listings for the frame of a P3Steel 2.5 DXL edition. Clicking through to them and viewing all the images noticed it was MY kitchen… THAT’S MY FRAME!
With the frame painted and dry, first thing to do is bolt together the main structure. It slots together like a jigsaw and there was absolutely no issues or problems in this process. All the bolts and nuts used to secure the main frame parts are M3 bolts and nylock M3 nuts. The RepRap Wiki suggests … Read more