How did you use the flat you had created on the front of each plate to make the edges 90° to the front and to each other? And how did you get the back of each plate parallel to the front? Please give us some details I am dying to know!
I think I have worked out something that might work...
Ink the edge of plate A, and place it and plate B on plate C with the newly flattened fronts of the plates facing. Gently butt the inked edge of A to the edge of B to be flattened, keeping the already flattened surfaces of all 3 plates in contact. Then reink A if necessary and mark a similar edge of C in the same manner, this time resting A and C on B. Clean the ink off A. Scrape the inked high points on the edges of B and C. Then similarly use B to mark C using A as the rest. Clean B, scrape C. Swap the names of plates A and C and start again.
Is this correct? I have convinced myself that it would work but that doesn't mean I'm right.
Presumably the next step would either be to:
Work an edge that meets the newly flattened one. Work would proceed as before but during marking the newly flattened edges of the plate instead of it's front would rest on the reference flat. Maybe after this was complete it would be checked for right-angles to the front of the plate?
Work the back of the plate.
The back of the plate could be worked using this technique from the first edge worked to make it theoretically parallel to the front,
but wouldn't that introduce error? Or is this error averaged out by checking against all of the other worked faces and shaving if necessary?
Also did the instructors on the course say which edge to right-angle first for greatest accuracy? My guess would be to do one of the longest first as a smaller edge would be more prone to errors from it tipping over slightly.
no subject
I think I have worked out something that might work...
Is this correct? I have convinced myself that it would work but that doesn't mean I'm right.Presumably the next step would either be to:
- Work an edge that meets the newly flattened one. Work would proceed as before but during marking the newly flattened edges of the plate instead of it's front would rest on the reference flat. Maybe after this was complete it would be checked for right-angles to the front of the plate?
- Work the back of the plate.
The back of the plate could be worked using this technique from the first edge worked to make it theoretically parallel to the front, but wouldn't that introduce error? Or is this error averaged out by checking against all of the other worked faces and shaving if necessary?Also did the instructors on the course say which edge to right-angle first for greatest accuracy? My guess would be to do one of the longest first as a smaller edge would be more prone to errors from it tipping over slightly.