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| "F" for fail, making new tooling... |
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| John Hill:
I know what you mean about the cost effectivness of this little project John but I am actually trying to learn new skills. Tomorrow I will go down to one of the small engineering firms in this town and see if I can get some suitable steel of at least 45mm diameter to make another adapter or two. We can get most things here but it takes a while and with Christchurch still in a state of disarray some things take longer than usual. There are no limits much on what bits and pieces we can import so thats always an option though it varies a bit as our dollar staggers from one low to the next. The Little Machine Shop has the chuck adapter plates for US$30 but I have not see any MT2 to 1 1/2 x 8tpi adapters out there. Fortunately the engineering firms in this town are rather small(ish) and I find them quite approachable and a great resource for small bits of material and advice. They can be quite interesting to visit too as happened last week when (as we walked through the shop to his back yard) I remarked on them working on a traction engine, "Oh yes, we are doing three right now". What I did notice though is that the size of the shop and the amount of machinery appeared extensive compared to the number of people around. ::) |
| JimM:
--- Quote from: John Hill on March 20, 2011, 05:26:57 AM --- The Little Machine Shop has the chuck adapter plates for US$30 but I have not see any MT2 to 1 1/2 x 8tpi adapters out there. --- End quote --- Hi John Not sure what postage cost etc will be to NZ but Chronos stock them, second up from the bottom of the page http://www.chronos.ltd.uk/acatalog/Vertex_Rotary_Tables_and_Accessories.html HTH Jim |
| Bogstandard:
Jim & John, I used those adaptors for a fair while on my RT, but found them rather limiting if you want to hold longish items. I now use an adaptor plate, which not only is a little more rigid, but by having the hole right thru it, allows longer (but still rather thin) items to be held. http://www.chronos.ltd.uk/cgi-bin/sh000001.pl?REFPAGE=http%3a%2f%2fwww.chronos.ltd.uk%2facatalog%2fnew_engineering.html&WD=adaptor%20chuck%20plate&PN=3--Rotary-Table-Adaptor-with-Myford-Thread.html%23a112185#a112185 John |
| John Hill:
John, Jim, I persevered and got a satisfactory result. Not having any steel of adequate diameter I instead turned up collars to fit on my adapters (two) that I could carefully turn to get good register fit with the chuck mounting plate. The collar was especially useful when making the one for the lathe as I was able to put the collar in place on the adapter with a dab of Loctite then loosly tighten the draw bar the result being the taper fully home with the collar bearing against the face of the MT5 to MT3 sleeve. I did the rotary table one another way in that I put the adapter in place, then the collar with a dab of Loctite and spun the plate on. In each case the collar was a light press fit on the adapter. |
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