LowRider 3 CNC - table extenders to use LR2 table (with metal struts) with LR3 - endstop/tensioner supports v1.0

New Version 1.1 Note:

In September, 2023, a fellow V1E maker ( @steved on the V1E forum ) needed a little bit of adjustability on the location of the right-side belt-tensioner+endstop mounts, and so I made a v1.1 remix of this design, which provides 10mm worth of adjustability. If your LR3 X gantry is a bit long (not more than 10mm too long), you can use the new v1.1 version of the design. The only differences are the two right-side mounts ("LR3 Tensioner Extender Front RIGHT" and “LR3 Tensioner Extender Rear RIGHT”).

Older Update Note:

In March, 2023, a fellow V1E maker requested a "WOOD INSERTS EDITION" of this design, which I provided. If you prefer adding woodworking to save print time, go to the new remix here. Otherwise, for the original “print-only” version, continue below. As of Sept. 19, 2023, there is not yet a v1.1 version of the “WOOD INSERTS EDITION.”

I upgraded my LowRider v2 to LowRider v3. Normally this means a wider table is needed if you want to maintain the same cutting area. However, if you have metal struts on your LowRider 2 table, then you can add these “end-caps” I designed in order to widen your table's “reach” and thus use your existing table without widening it. With these extenders I can still cut 49" x 97" MDF sheets.

The original V1 Engineering LowRider 3 tensioner bases and tensioner mounts attach directly to these. 

Caveat: 

• The original V1 Engineering LowRider 3 tensioner bases have holes intended for slightly thinner screws, and I drilled them out to accept M5. 

Notes:

• As of May 3, 2024: Two folders of this design are provided:
  • Regular for Y rail on the right (stock LR3) 
  • Mirrored for Y rail on the left (mod'd LR3) 
• There are nut capture slots on the bottom sides of each, which accept two M5 nuts per corner, and then you can attach the tensioner bases to these.

My LowRider v3 upgrade process is detailed on the V1 Engineering forum here: https://forum.v1engineering.com/t/on-upgrade-path-lr2-lr3-clarksburg-wv-usa/32920/

You want these strong, not so much to avoid breaking but primarily to avoid flexing. I printed these with 1.8mm thick walls, which is the equivalent of 4 ½ perimeter walls —if using a 0.4 nozzle at normal settings. I do only 3 walls and have it be as thick as 4.5 walls, because I print with walls that are 0.6mm thick instead of 0.4mm thick. Stock 0.4 nozzles can handle this if your extruder can keep up. I have two printers with 0.6 nozzles and several others with 0.4 nozzles. I run them all at 0.3mm layer height and 0.6mm wall thickness.

Change log:

• Friday, May 3, 2024: Added non-mirrored set, and arranged all files into two folders:
  • Regular for Y rail on the right (stock LR3) 
  • Mirrored for Y rail on the left (mod'd LR3) 
• Monday, July 24, 2023 - re-uploaded mirror flipped versions of the “Front LEFT” and “Rear LEFT” wing extenders, as they were wrong. Kudos to @JeffSwartz_995285 (FundamentalConcepts) for the heads up in the comments. I confirmed the issue and fixed it.

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Various LowRider 3 CNC remixes:

• LowRider 3 CNC Collection

View all my models and remixes on Printables:

• Design8Studio 3D models

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