I am fitting a new swingarm on my bike, and needed to narrow it a bit to fit my frame. Cutting the arm was no problem, but the hardned steel bushing that the needle bearings ride on was a different story. Google was not much help with a few suggestions to heat treat to soften the steel and then treat it again to harden it. Then I found a video of a Aussie guy cutting one on a lathe with a dremmel.
Worked great, strapped the dremmel onto my lathe and just took it slow. Perfect straight cut.
If you are planning on fitting a Motolanna arm, Im pretty sure that you need to cut SR500 bush to fit as well.
Just make sure to clean and re-oil the lathe. That grit is rough on Chinese cast iron. A tool post grinder is a great thing to have on a lathe, though!
Interesting, never seen one of those before.
ive used a 3" cutoff wheel on an arbor in the chuck and put the workpiece on the apron before. similar approach. works well for angle cuts as well.
Quote from: rodneya on December 30, 2020, 10:02:11 AM
Interesting, never seen one of those before.
That is just what you have by strapping the Dremel to your cross-slide. Just be sure to remove any grit that is thrown off of the wheel. I've read of covering the ways with taped-on plastic sheets and also heavily coating with grease that is then wiped off.
Quote from: pidjones on December 30, 2020, 06:43:43 AM
That grit is rough on Chinese cast iron.
As opposed to.......? :umm:
Quote from: DesmoDrew on December 31, 2020, 06:09:42 AM
Quote from: pidjones on December 30, 2020, 06:43:43 AM
That grit is rough on Chinese cast iron.
As opposed to.......? :umm:
Really just trying to give a helpful comment.
Quote from: pidjones on December 30, 2020, 03:08:57 PM
Quote from: rodneya on December 30, 2020, 10:02:11 AM
Interesting, never seen one of those before.
That is just what you have by strapping the Dremel to your cross-slide.
Only a lot less hokey
I have a box break that in the back of the break the words "cast iron steel" are literally cast into the break.
It always makes me laugh.
Quote from: rodneya on December 31, 2020, 12:39:10 PM
Quote from: pidjones on December 30, 2020, 03:08:57 PM
Quote from: rodneya on December 30, 2020, 10:02:11 AM
Interesting, never seen one of those before.
That is just what you have by strapping the Dremel to your cross-slide.
Only a lot less hokey
Whatever it takes to get the job done.