A CHEAP HOMEMADE JIG
This is what I used.
1 x 2080 and 3 x 2040 aluminium profiles, M6x8 bolts, Ø10 threaded rods, and right angle joiners and a bed leg.
The 2 meter 2080 was cut to : 1250mm - 310mm - 250mm + extra.
The 3 peices of 2040 were cut to : 1000mm - 500mm - 85mm - 4x250mm + extra.
A bed leg attached to the back is mounted in a bike stand so I can turn the jig upside down.
The blueprints.
The pointy bits from e-bay. I removed the anodized colour with drain cleaner.
A plate for the spirit level is mounted on the front .When that is level I can set the seat stube and head tube.
Now it looks like this. More difficult than I imagined to make. Has to be stif and straight. But now I have a cheap jig that works.
