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  • I have heard about the frame stress caused by a ridged jig..in fact I remember Jason rourke saying his jig has a enough flex to cope with movement.
    Old school london frame builder Ron Cooper (now sadly passed away) did away with the jig completely for the same reason.

  • the vast majority of builders dont weld/braze in the jig. Many would consider it bad practice. By brazing in the jig you can build stresses into the frame. Most people, myself included, tack in the jig then remove it...you have to be in control of the welding process so as not to warp the frame, but you dont have the capacity to build in stresses.

    This only goes for tig/fillet brazed frames, IDK about lugs.

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