0.9mmWhat were you trying to roll with them?
A small set like that probably only designed for 20gauge...
i have to agree i think, youre overtaxing them with 0.9. theres a lot leverage on the small roll there, even with 0.9. you *may* find some success by prerolling on some normal slip rolls and finishing on the cone rolls
Hi Keith,Data plate on the side in the photo says 0.5mm or 24BG? O.5mm is 26 gauge so pretty thin, asking it to do .9 its going to struggle.
We make the cones on slip rolls as it is. The problem is very small conesBest reply yet. Get them started on a set of slips, and tickle them up on the cones.
hammer form over a dolly and then roll them out properlyWe make the cones on slip rolls as it is. The problem is very small cones
That’s great if you like a hammer effect on your exhaust pipeshammer form over a dolly and then roll them out properly
Finally a useful comment. Thank you very much Gazbased on similer reference
found a video
Depends how much of a monkey you are to be honest mate. Use a nylon mallet with some intelligence and you shouldn’t have big dents all over the show, and the roller will smooth it out. But what do I know about sheet metal workThat’s great if you like a hammer effect on your exhaust pipes
interesting , those two videos ahow the guys using the machine in two totally opposite ways , one has the small end of the cone to the small end of the roller , and one has the small end of the cone towards the large end of the roller..
One way seems to work better though.
Depends how much of a monkey you are to be honest mate. Use a nylon mallet with some intelligence and you shouldn’t have big dents all over the show, and the roller will smooth it out. But what do I know about sheet metal work
edit, you’ve annoyed me a bit here, so this is the full answer:
if you’re damaging the machine, there’s two options, either your a cack handed idiot, or youre asking too much of it. As even a monkey can turn a handle, I‘ll go with the second.
youre after some magic answer as to how to do the job, and the only one you’re going to get is either get it as far done as you can on a set of slip rolls and then finish it on the cone rolls, or form it on a dolly with a mallet and then finish it on the rolls. OR, the proper answer, which is to get your man to dip his hand in his pocket and pay for the correct machine for the job and not have downtime every time you damage the machine
you’ve broke them twice, so you’re obviously asking too much of them. I’m not being funny but rolling isn’t the most difficult job in the shop, not so much that you’d break a machine twice through not knowing how.Well I didn’t set out to offend but some of the conclusions you have drawn are plain rude.
The exhaust company in question make about 100 sets of pipes, hand rolled, every year.
This isn’t a question of buying the right kit, the right kit doesn’t exist in this country without importing unseen. And nor is it a question of skill.
You must some metal worker if you can hammer 0.9mm steel cones around a dolly, then chrome them and expect a good finish.
We can’t roll them afterwards, due to the subject on which this whole thread is based, we can’t seem to get a good cone out of these rollers.
Then comes time, this is a business, not a personal project or one off.
Motad used to roll these small cones. When they went bust the firm tried to buy the Hydraulic rollers, but norton done a backhander.
I’ve already said the rollers the firm has are much more substantial than those in the image. They are cast iron, and somewhat larger.