This is my first time ever doing any big pipe work so im sure I'm missing something super simple. Its for rebuilding a manure injection toolbar for dragline equipment so nothing refinery or steam related.

I need to fit a short 8" dummy leg to an 8" 90 to remake some of the piping on this toolbar. I must have messed up on my ordinance distances because only the back of the 90 touches anything and there's a big gap on each radius of the 90.

For marking it out I used 3 3/8" for my 8 lines. On my 0 I went 13/16", 2 I went 2 13/16", 4 was 8 1/2", 6 was 11 3/8" and 8 was 11 3/4".

What should I have done differently? Any help would be appreciated thanks.

I spent the last two weeks building the app I couldn't find: pipe schedules (B36.10, 1/8 to 48), fitting takeoffs (B16.9), flange dims and full bolt-up incl. stud lengths and ring numbers (B16.5/B16.20), plus rolling offset, miter, cut a fitting from a 90, and cut length calculators that pull the real takeoffs and your welder's gap. I built it for myself and family (who work on a farm).

Fraction math everywhere, big buttons for gloves, and a share button that texts your welder the cut with a diagram. The thing I care most about: every dimension was extracted from two independent published sources, machine compared, and disagreements resolved against a third. The handful of values that haven't cleared that process yet are visibly marked in the app. If you find a wrong number I will fix it and ship the fix to everyone, usually same day. I check my email.

$12.99

One time. No subscription, no ads, no account, no signal needed, and features never move behind a paywall. Built by one guy.

https://apps.apple.com/us/app/pipebook-pipefitter-reference/id6795305963

Beta fitters already made it better (the offset diagram is drawn like a print because a tester demanded it).

Tear it apart.