Wharram Builders and Friends
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Today I continued work on drawing the backbone lines on the lofting floor. I finished drawing 7 station lines.
How to check that your station lines are perpendicular to the plywood edge:
- fix a length of string, with a pencil tied to the other end, to point where the station line crosses the ply edge (the station point) and mark the ply edge on both sides of the station point (both marks are the same distance from the point)- fix a larger length (about twice as long or more), with a pencil tied to the other end, to one of the marks you just drew and draw a semicircular line nearby where you think the perpendicular should lie. Do the same with the other mark so that the semicircular line intersects the previous one. The perpendicular is determined by a line crossing both the station point in the edge of the ply and the intersection of both semicircles.
The longer the strings, you'll get better precission.
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