Hi there - I’m just wondering what the upper weight limit of spindle etc that people have mounted on the Shapeoko3/HDZ is? Thanks
Are you using the V Wheels still to attach to the X beam?
If so then these are likely the constraint, when I did all my deflection measurements I found the HDZ to deflect < 1/10th of what I measured just in that V wheel joint.
There is also the motor torque required to accellerate the assembly up and down, as you increase the total mass the feed rates or accelleration may need to be tweaked in GRBL to avoid missing steps. The peak vertical forces from the HDZ thanks to the ballscrew are significant, you can dig a hole in the spoilboard with a dowel pin if you’re fat fingered…
I have about 6.5kg of spindle and other junk attached to my HDZ on an SO3 with Dan Story derived X axis linear rail conversion, I’ve almost doubled the standard Z feed speeds and all is fine for me.
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Thanks for that Liam. Yes still running the V wheels so that may be my constraint
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I should probably add, that 6.5kg was on the V Wheels before the rail conversion and it all worked fine, a common 2.2kW water cooled spindle is about 5kg.
How much are you thinking of hanging on there?
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FWIW I also used to run a shapeoko3 with HDZ and a 6kg spindle, and it was fine. I was never after pushing it to the limits though
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The project I’m looking at is a dual router setup . Mounting plate affixed to HDZ with a router hanging off either end. I figure if you’re cutting one small part and have the work area space - why not cut two small parts at once…
Current plan is to use makita routers but I started looking at spindles and then the weight maths started…
Very interesting… a polychephalic Shapeoko!
Setting Z zeroes might be tricky without a special jig or something.
Yep the Z setting is one challenge Gerry, I think it will be manageable.
A technique which folks used to use for tool changes might be applicable — set zero against one piece of stock (with no tool in the other) then position the other piece of stock (presumably in a fixture which has the same offset as the second tool), and install the second tool choking up on it so that it has less stickout than the first, then jog to zero, then loosen the collet for the second tool and gently drop it on the stock, then tighten.
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