16-05-2018, 10:34 AM
(15-05-2018, 03:17 PM)bob46320 Wrote: Do you find the magnetic spray better than the red dye penetrating stuff? When we use the magnetic, we had to pass a very low voltage and a few amps through the part to be tested. Clamped the bit to be tested between two lead jaws.
bob
Hi Bob,
Sorry for the slow reply, a bit busy.
I've used the dye pen in the past, but didn't get on with it very well. I'm sure if others use if often they would get better result.
The company that sells the cans, also sell the electric magnet machinery "thingy" to use with the tins. But these professional units can cost £2.5k. A bit pricy for home use.
You can see the results we get with a simple magnet, the cracks are quite obvious.
And yes I agree that just because something is cracked, does not mean it is scrap. BUT if it's a steering or brake part. It's your life and your risk if you use it.
For me if I know we're a part cracks, especially steering parts. I'll test them before I sell them. it's NOT a garrantee for the future use of the part. It shows customers the parts are in an acceptable condition when they buy them. Think of it like an MOT ?
Tony.