RIDGID 36962 300 Series 310/316M Plumbing Bender with 5/8-inch Tube Size Capacity, Copper Pipe Bender For Bends Up to 180 Degrees

It arrived on Friday, pulled a 180 bend and it rippled the entire length of bend.Returned the brand new RIDGID £100 15mm 180 degree pipe bender, replaced with an identical model.It identically ripples too.Worst rippling I've ever seen on a pipe bender in 30+ years of using pipe benders.Types K, L, M (mostly American) pipe wall thicknessK = 1.24mmL = 1mmM = 0.7Types X, Y, Z wall thickness (Type X is the most common type used in UK)X = 0.7mmY = 1mmZ = 0.5mmSo our type X is .54 to .3mm thinner than types K & L.Additionally types K & L are 220 N/mm2 whereas type X is 250 N/mm2.Meaning, type X is semi hard drawn copper pipe, whereas types K & L are soft copper tube.Types K, L are generally used in refrigeration, air con, heat pumps.Types X & Y are used in water, heating, gas, within the home/light commercial.So unless you're in the minority who works solely in refrigerants/heat pumps then this tube bender is not for you.I've included some images, of the rippling by the RIDGID 'tube bender', and shown a comparrison to my old trusty hilmor 'pipe bender' with no ripples, how it should.

Was very disappointed with this. It rippled the pipe at every use. Will stick with my 15/22 pipe bender using the spoons.