I was taught the true and technical way to measure the fillet size is by the throat depth (root to face distance @ an angle that bisects the joint angle), which should be equal to the thickness of the smaller of the 2 plates in the joint.
If the face of the fillet is flat or concave, then the legs would have to be a bit longer than plate thickness to reach minimum throat depth. If the face is convex, the legs would have to be at minimum equal to plate thickness. So yes, depending on face shape, the legs could need to be longer than plate thickness to reach mininum throat depth.
Since most don't have an accurate way to measure throat depth without a fillet gauge, and most put in their fillets with convex face shape, it's simpler to say make the minimum leg length at least equal to or more than plate thickness, even though that isn't absolutely technically correct. Maybe I should stop saying that! The problem there though is then I would have to explain throat depth and face shape each time. My replies on here are usually half of a novel as it is!
Results 51 to 54 of 54
Thread: MIG or stick on this one?
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09-09-2009, 04:27 AM #51
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Millermatic350P/Python, MillermaticReach/Q300
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09-09-2009, 02:54 PM #52
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well, they moved it today (i couldn't get there) and i haven't gotten any phone calls, so i'm assuming it went well.
unless the guy who would have had to call me when it fell was under it if it DID fall...
F450 crewcab flatbed
Miller Bobcat 250
Miller 8VS suitcase
Millermatic 251
Millermatic 180
Miller Spectrum 375
Miller Econotig & 150 STH
Enough snap-on tools to prevent my future kids from going to college
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09-09-2009, 03:44 PM #53
Senior Member
- Join Date
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Im glad it worked out ok, assuming it did.
Millermatic350P/Python, MillermaticReach/Q300
Millermatic175
MillermaticPassport/Q300
HTP MIG200
PowCon 300SM, MK Cobramatic
ThermalArc 185ACDC, Dynaflux Tig'r, CK-20
DialarcHF, Radiator-1
Hypertherm PowerMax 380
Purox oxy/ace
Jackson EQC
-F350 CrewCab 4x4
-LoadNGo utility bed
-Bobcat 250NT
-PassportPlus/Q300
-XMT304/Optima/Spoolmatic15A
-Suitcase8RC/Q400
-Suitcase12RC/Q300
-Smith oxy/propane
-Jackson EQC
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09-09-2009, 03:46 PM #54



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