Atomic Zombie's Granny's Nightmare bicycle chopper

Step 5 Grind the edges of the fork crown.

The original fork crown is used as the base of the triple tree. The new fork leg extension tubing will be welded directly to the ends of the crown, so it should be ground slightly to allow for easy welding. Do not take too much metal out, just enough to make a good weld that will cover 1/3 or more of the new tubing's diameter. If you ground too much out, the fork legs will be too narrow for a front wheel, and major warping will occur to the conduit while welding.