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| sbwhart:
--- Quote from: Bernd on November 06, 2009, 03:55:35 PM ---Hey Stew, Did you know that's a trick clock makers use to blue the hands of a clock? Bernd --- End quote --- No I thought they used chemicals bit like gun blueing, but when you think about it, it would be a nice easy way to do it. Cheers Stew |
| bogstandard:
Very nice indeed Stew. Now aren't you glad you knocked up that toolpost grinder. A lot of people think they are just for getting a pretty finish, but in fact they are a most versatile bit of extra tooling. Allowing you to easily make things that you couldn't have done before. In fact, I think if you made yourself a simple radius dresser for your wheels, that might be a way to go for making your involute cutters. Plus of course you have the use of my surface grinder and diamond wheels to put all your cutting edges on. John |
| sbwhart:
--- Quote from: bogstandard on November 07, 2009, 03:01:32 AM ---Very nice indeed Stew. In fact, I think if you made yourself a simple radius dresser for your wheels, that might be a way to go for making your involute cutters. Plus of course you have the use of my surface grinder and diamond wheels to put all your cutting edges on. John --- End quote --- Thats what I,m planning John, I got one of those 2.5" sine bars to use with the dresser so I can get the wheel form for the pinion gear cutter. :----- great minds think alike :smart: :D Stew |
| NickG:
That's great Stew. It's always nice when you can help someone out too. I made some bits for my friends mini moto once, the pedals were fastened on with these aluminium brackets, but it was that butter aluminium the same as my shelf brackets and they just bent, so in the true essence of motorsport I made him some nice heavy steel ones! That tool post grinder is amazing. I was looking through a sales brochure that came with my Harrison lathe the other day, it must have been from which ever machine shop it was originally purchased from as it had boxford stuff in the back too. They supplied toolpost grinders for both machines so they must have been popular things back then too. Nick |
| sbwhart:
Back on to plattern:- The base is a real big chunk of steel , for me anyway (6" dia by 1.25" thick), John had kindly offered to turn it up for me, but thats a bit against my stubborn streak so decided to have a go myself. Set up in my big four jaw skim up face and clean up OD Drill and tap a M12 blind hole Stud lock the spigot into base. I'm realy impressed just how much my el-cheepo Chinese lathe can be pushed, it copped real well I had to take small cuts 0.25 any more and the belt slipped, but hay I've got all day to do it. Well thats it for know just had a call that my Dad's been taken into hospital. Dashing off Stew |
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