Upgrade from MPCNC (burly I think)

LowRider CNC Advice
1

I’m considering changing from an older MPCNC, I honestly don’t know how big I want it to be, but I’m trying to figure out two things…

  1. What hardware can I scavenge from my MPCNC (Burly, w/Rambo I think)
  2. I’m not sure how big I want it… I was thinking of making the gantry the standard 4’, but making the y only 2 feet to start, and it’s likely easier to modify that rail after if I want to expand to 4x4 or 4x8? Or will that lead to issues?
2

First of all: go for a LR4. There are no drawbacks and it scales easily.

3 Likes
3

You should be able to reuse all 5 motors, any end-stop switches, and lots of the bearings from the Burly. The controller may also be reusable, depending on which one was used. I’ve already purchased a new Jackpot board to update my Burly, but I used a non-standard CNC Shield on mine years ago because it is what I had on hand. Whether you can re-use the wiring will come down to how long the current motor extension are and whether they’re wired for series (which will be the case if the machine can’t auto-square, i.e. only a single driver runs both X motors and another one drives both Y motors).

If getting the hardware kit from the V1 store isn’t an option , I’d sort the nuts/washers/bolts and bearings you take the Burly apart and compare that inventory to the LR4 BOM and just get what you need locally. I sourced my hardware from Fastenal because we had one in town but you could also hit Granger or McMaster Carr to fill the gaps.