The expensive bits wotk on both, besides time you’re not iut anything switching to the lr.
I ran a primo for two years thinking I could not afford a lowrider. Turns out I could have. I’ve recently built two of them and I’m wishing I hadn’t just reprinted and rebuilt the primo. the LR4 beta version I have is so much simpler. fewer moving parts, which to me means less broken parts and less places for bearings to hang up. Fewer wires to avoid, less cable chain, fewer bearings, less pipe overall and a more open table. The primo can cut yoru XZ and strut plates for the lowrider if the lowrider isn’t too large, then you can strip the motors and controller off the primo for the lowrider and donate the printed part set and sell the hardware to a deserving friend and encourage them to buy a used ender on CL, FB, or ebay, and strip that down for the motors and controller to make the mpcnc work. Could be a fun exercise. you will need some M5 bolts for the LR4 as well as linear slides and a couple lead screws.
I’d say it is 50/50 If you have space, I hear the primo works awesome as a laser carrier.
2 Likes
The other thing I was thinking of was to maybe use the Primo as a dedicated laser cutter and the LR4 for wood, metal, etc. Is there a mount for the LR4 to use with the Dewalt 660 or would that even be recommended over the Dewalt 611?
2 Likes
Yeah, I started building the Primo several years ago and had everything printed and cut sitting in a box just returned to the project. I have it all assembled besides the wiring, but now the LR4 was too good to pass up.
If I build the LR4 to the standard 4’ x 8’ work area, would I be able to cut the strut plates with the 2’ x 2’ sized Primo?
1 Like
Yes, if you are comfortable with using dowels and flipping the workpiece in between.
2 Likes
you’ll have to panel it… cut, slide, cut slide with dowels like tokoloshe recommends. It woudl be that or a jig saw or a friend.
2 Likes
Another option, for people with a CNC…
Make the largest temporary strut you can, then cut the correct sized strut with the temporary strut using conservative slow feed/speed/doc settings. Incrementally bootstrap your way up step by step to the build you want.
For people without a CNC… The LR4 .stl models collection includes 3D printed temporary struts that can be used on left and right front strut side during Bootstrap Mode. This is similar to LR3,
3 Likes
You could do the Primo with a laser on it, and the LR4 with a router!
Hey @Larrybelarry, no idea how helpful this is, but I uploaded snapshot of my Cura profiles to https://github.com/aaronse/v1engineering-mods/tree/main/lowrider4/mods/3dp-profiles.
Personally planning to try out Orcaslicer based on positive experience others have shared. Have been to lazy/busy to make time to try.
1 Like
I’ve never tried this method or seen it done. Are there any video examples showing how this can be accomplished?
That’s probably what I’ll do. Can anyone recommend a good laser module compatible with the SKR Pro v1.2?
Are you referring to the STL file named “temp-strut”?
Filament is brand new, both rolls
Slowing down does reduce the problems but it still isn’t pretty 
Here is me describing the process.
1 Like
The STL temp strut is printable. However, I think Aza was saying you could cut strut plates out of hardboard or MDF, but only as big as would fit on your MPCNC, and use those to strengthen the new LR4 enough to use it to cut your full length ones.
My understanding is the Jackpot has some advantages for laser when compared to SKR, while the SKR should be fine for a LowRider. Maybe, consider switching the SKR to the LR4, and get a Jackpot for the laser on the MPCNC?
1 Like
When I get back home, I’m going to ask you to elaborate on it.
How you set up your he dowel holes in the table, and in the software, etc., etc.
Might as well just go ahead and make a detailed video of the whole process so I don’t have to bug you later 
It doesn’t sound that complicated on the surface, but don’t know if I’m missing anything
4 Likes
I have to figure out how to cut mines, cause my LR3 is larger than longer😂 I had a Full Sheet machine before, but now I shortened the table to be less “invasive”… I think I’ll cut them in two times, half>rotate>half
See four posts above. 
Too many posts😂 You have to read 20min before post something that’s new
Anyway, that’s exactly the process I thought about!
1 Like