So, how long would it take to assemble it for a "Test Fitting"?
If that big Shaper truly is the proper answer to this question...
Don't worry about paint, or surface rust on the case, or getting the wiring beautiful and UL Approved with Stop Switches, or anything else non-critical - Worry about that later, there's work to be done.
Wipe the parts down good with Kerosene, clean the swarf out of the old wipers best as you can, oil it up real good, and slap the puppy back together As Is for as "test run".
The only thing that would be a stopper is wear on a main slide that's left a big lip that could cause damage if you ran it like that - so you do the rehab work and give it a ride on the surface grinder.
A strategically placed rope tied to the power cord just behind the plug makes a suitable Emergency Stop Switch. Kinda hard on the receptacle, but it'll work.
And take notes on what has to be done when you do it for real later - this job just gave you the funds to fix up the machine...
Throw in your favorite Charlie Sheen-ism here - "Winning!!"