how to make angle  L type  support  TEE type  support  U type support 

how to make angle  L type  support  TEE type  support  U type support 

With formula any degree L type angle 

angle OD dimensions marking cut back  = 90 degree  L type angle 

with formula this position 

Degree ÷ 2 = half degree

tan × degree = B × angle OD = cut back 

Exempla  90 degree ÷ 2 = 45 degree

tan × 45 = 1 × angle OD 75 mm = 75 mm cut back  A 

L type  support  

TEE type  support 

U type support