Nice work.
chris... Wrote:
> Main issues I can think of are:
> 1. Z axis is driven only on one side and connected
> with 3mm aluminium
Do what the old Wades Mendel did and drive both sides using one motor and a belt (or chain in your case) between the Z rods.
> 2. Z rails have no bracing support in the x
> direction, at least this is fixable
> 3. Backlash is probably excessive, as it is chain
> driven.
Keep the chain tight and at least it should get you going. Probably enough to make any bits you might need.
> 4. Stepper motors are NEMA24 31kg/cm, just dont
> crash it
> 5. None of the nuts have spring washer.
If necessary, put a second nut on the back of the existing ones. and tighten the nuts to each other, at least till you get some spring washers.
> 6. Can't see the Y stepper motor mount lasting too
> long
Make another like it and mount it underneath perhaps? Most motors have screw mount holes on both ends.
> 7. One of the z axis rails mounts is not square,
> fixed this with washers
>
> Good points
> 1. It's all made from left over or scrap metal or
> salvaged from a previous machine. Meaning I had
> already paid for it.
> 2. Fix the above problems and itll cut aluminium.
> 3. All axis move freely
>
> Now I need to buy a hotbed, limit switches,
> controller board, power supply and stepper
> drivers. I already have an extruder.
> I was thinking an all-in-one board like the RUMBA,
Sounds like a reasonable choice.
Anyway, welcome! Hope to see you printing soon enough.
PS: What part of Melb/Vic are you in? I'm in Caulfield, and the local hackerspace (where we hold a 3D printing night, twice a month on the 1st and 3rd Monday of the month) is in Hawthorn. The hackerspace is called
HackMelbourne. If you're ever nearby, feel free to drop in and say hello.
