Lord Nibbo
Established Member
Just spotted this, For doing or finding a radius quickly. I thought you might like to see it.
Woody Alan":2m0ti7ps said:it's impossible for what you suggest to happen ...? but I never did get the whole eight sided tapering polygon thing so I could well be wrong
Alan
Edit for not thinking before posting
waterhead37":1kib8g8d said:Maybe we are talking at cross purposes?
The point I was trying to make is that (taking the picture as an example) the two 4 inch graduations can be placed at an infinitude of positions from the very corner of the workpiece to 4 inches along the respective sides. The apex of the triangle thus formed (by the corner of the framing square) moves position accordingly - along a line at 45 degrees to a side, drawn through the corner of the workpiece. The possible displacement being the difference between a side and the diagonal of a square whose sides are the desired radius (4 inches in the case shown, so with a diagonal of 4x1.41 inches = 5.64 inches - potential difference thus 1.64 inches)
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