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warwickben · 03-21-2008, 10:12 PM

i bend stuff from .02 wall up to .25 the math should be the same . the wall thickness more or less just determines how much you have to over bend. like when you bend a 90 you mite bend it to 92 deg or 95 then it springs back. so you need some junk tube to learn on your benders and see how much you have to over bend for what angles. o yeah the 0 mark on benders (the point where the bend starts) isnt allways in the right spot so you mite want to put your mark a head or before the zero line on the bender.

to figure out the dim between the center of to angles other then 90 you need to know the run and rise. for 45 deg that number is all ways the same.what i mean is if you figure out what the run is it = the rise.
so to figure out the distance from halfway thou one bend to halfway thou another.
A=run B=raise C= center to center between two bends other then 90.

to find the center to center bend you have to do A(power of 2) + B(to the power of 2) = C(to the power of 2) for those who dont remember from 6th grade power of two just means AxA
when you have c find the square root(did i spell tat right) square root of c = center to center of each bend

this is part of the reason i listed the formula angel x radius x .01745 = lenght of a bend.if you dont do two bends in a row that are the same angle like a 45 then a 30 you need to take the center to center dim, minus half the lenght of the the second bend, add half the length of the first bend, then add that number to the dim you came with for laying out the frist bend.
but if your doing two bends that are the same angel in a row just add the center to center of each bend to the dim for laying out the frist bend.

03-21-2008, 10:12 PM	#19
warwickben sa rat rod Join Date: Mar 2008 Location: tewksbury ma Posts: 408 Rep Power: 18	i bend stuff from .02 wall up to .25 the math should be the same . the wall thickness more or less just determines how much you have to over bend. like when you bend a 90 you mite bend it to 92 deg or 95 then it springs back. so you need some junk tube to learn on your benders and see how much you have to over bend for what angles. o yeah the 0 mark on benders (the point where the bend starts) isnt allways in the right spot so you mite want to put your mark a head or before the zero line on the bender. to figure out the dim between the center of to angles other then 90 you need to know the run and rise. for 45 deg that number is all ways the same.what i mean is if you figure out what the run is it = the rise. so to figure out the distance from halfway thou one bend to halfway thou another. A=run B=raise C= center to center between two bends other then 90. to find the center to center bend you have to do A(power of 2) + B(to the power of 2) = C(to the power of 2) for those who dont remember from 6th grade power of two just means AxA when you have c find the square root(did i spell tat right) square root of c = center to center of each bend this is part of the reason i listed the formula angel x radius x .01745 = lenght of a bend.if you dont do two bends in a row that are the same angle like a 45 then a 30 you need to take the center to center dim, minus half the lenght of the the second bend, add half the length of the first bend, then add that number to the dim you came with for laying out the frist bend. but if your doing two bends that are the same angel in a row just add the center to center of each bend to the dim for laying out the frist bend.