STUDER S33 GRINDER REBUILD PART 02

Update on the Studer S33 grinder we just brought in:

The machine isn’t in bad shape. We’ve got it completely disassembled and the original spotting marks are still visible, which helps.
Using our fixtures to check geometry:

• Inside V-way: readings run roughly 0 → +0.1 → +0.2 (tenths, i.e., 0.0001″) → a slight minus → back to zero.
• Opposite flat way (measured in the reverse direction):
•  generally within about −0.5 to +0.5 tenths, with a few pockets trending to about −1.0 to −2.0 tenths. That suggests a localized issue—likely lubrication or load-related—near one end.
• Wheel side: about 0 → +0.1 → +0.3 → +0.5 tenths. Close, but not good enough for a Studer.

Plan of work

1. Re-scrape all ways to bring them into zero and ensure the machine stays dead-level through the process.
2. Use the table as the master: we’ll zero the table and saddle and use the table to “print” the bed ways, then hand-scrape to full, even bearing.
3. Swivel table

• We’ve already hand-scraped the bottom so it seats properly on its intended pads.
• We’ll grind the top surface that the workhead and tailstock bolt to, then scrape those interfaces true.

4. Build the stack in sequence so every mating surface ends up flat and parallel to the table; once the geometry holds zero, we’ll establish the centerline.

We’ll record another update once the ways read zero and we move to the next phase.