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Hi,
I was checking the hard stops and proximity switches on our prs alpha (48x48) and found that the specs found in the shopbot install manual seem to be incorrect. So, I placed the hard stops about...

I surfaced the spoil board (with a 1.25" bit) and there is a small ridge on the back side of the pass. Worse than that previous surfacing before I levelled and had all 4 gantry wheels resting on the...

The skinny wrench is MIA, will have to make one. Do you happen to know the bolt diameter, thickness of wrench? I was also thinking of facing the spoil board first to see how bad/good things are....

I measured from the z-car to the table, not the spindle. Should measure from the spindle?

Thanks, I have levelled the machine and now have the 4 gantry wheels riding nicely on the tracks and the machine is levelled (along with using the clamps on the gantry.) I cut a large square and the...

:) No semi that I know of! I'll check the gantry squareness. Thanks for the tip!

Yikes. After being idle for several years, I am getting our Shopbot PRS Alpha going again. Today I removed all the v-wheel covers to clean and oil the felt. I found one of the V-wheels on the gantry...

The pinions teeth don't look too bad, a little corrosion, maybe. It hasn't been greased in a long time. I am hearing that it's ok for the pinion to be a little loose with the key installed, but set...

Hi,
So I removed all the spindles to inspect the pinions. All 3 of the x/y pinions were a little loose on on their shafts: I don't know if the key, or the slot in the pinion is warn out, but it was...

I should mention I hit the red stop switch and the key is removed from the control box (which powers the VFD/spindle I believe) during a mid file bit change. Note that I have found the shopbot docs...

Thanks for the tip! - can you point me to a pinion adjustment/check routine?

Hi,
Wondering about some things (related?) with our shopbot prsalpha 48x48.
1) Small holes made with profile CUT are slightly oblong and therefore one dimension is a little smaller than the...

Turns out the tool number 20 and up is for another spindle as you indicated above. Changed it, and the cut was fine.
Thanks for your help!

not a 2 head machine, but maybe the tool# is the problem? I can change that.

Thanks for the assistance. Here's the start of the .sbp file:
It seems to have the speed and spindle on commands...

'----------------------------------------------------------------
'SHOPBOT...

Like I said, the spindle operates with the C5 command. Something with the tool definition maybe.

Hi, I was running a small test cut with a new bit I entered into the vcarve database (a .75" straight cutter, copied from the .5" cutter tool). When I run the file, the spindle does not turn on and...