Joined: Nov 2005
Posts: 4,021
Likes: 2,086
From: NW Ohio
Bikes: 1984 Miyata 310, 1986 Schwinn Sierra, 1987 Ross Mt. Hood, 1988 Schwinn LeTour, 1988 Trek 400T, 1981 Fuji S12-1977 Univega Grand Rally, S LTD, 1973 Sears Free Spirit 531, 197? FW Evans
You can use a piece of angle stock as a straight edge. Go to the hardware store and get a piece of 3/4" or 1" aluminium angle about 2 feet long. When you lay it against the frame, the edges of the stock will be parallel with the frame. Metal workers use this trick to drill holes in tubing.