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| mechman48:
Back with another mod, On my lathe I have found that when using the compound slide, & I have needed to reset zero, the gap between the slide & the handwheel is too narrow for my non too slim fingers to grip the spring loaded calibrated dial so I thought 'got to improve on this' :scratch: so having removed the handle I measured up the OD of the knurled portion of the dial for my new adaptators ID, I then machined a piece of aluminium (the correct spelling for our US cousins..check periodic table :med: :wave: ) to an OD of 45mm IIRC. This OD was then knurled to provide a good grip when fitted. I wondered how to fix the adaptor & considered expanding the aluminium for a shrink fit onto the original dial, not having a blowtorch I opted for the hot water method & duly boiled up some water in my shop 'tea kettle' & plumpt the dial adaptor in for a few minutes, not having the thermal expansion rate for ally' to hand I opted for guesstimate.. no luck.. :bang: on measuring the OD of the dial & the ID of the adaptor I found I had mismeasured the ID.. :Doh: which confims the adage.. measure twice cut / machine once. Onward & upward Geordie I sez; so I decided to go for a press fit (Interference), I machined the adaptor ID to .003" less than the dial OD.. (ok you purists, I didn't conform to BS4500 :smart: but I wasn't fitting bearings :palm: ). I machined up a dolly to fit over the dial boss & using the bench vice, pressed on the finished adaptor..sorted :thumbup: then just a case of refitting the handwheel to the compound, I can now reset the zero point without having a struggle to grip the dial :clap: simple ..but effective! 1st pic original dial.. the rest follow on.. last pic all refitted to slide.. Cheers George :ddb: Edit: Reduced photo size. Don |
| dsquire:
George Nice little improvement there. I'm sure that will save some frustration down the road. Thanks for sharing that with us. Cheers :beer: Don |
| Lew_Merrick_PE:
--- Quote from: mechman48 on February 14, 2013, 01:33:35 PM ---I then machined a piece of aluminium (the correct spelling for our US cousins..check periodic table) --- End quote --- George, As somebody who started school in a priory school in Lancastershire before being returned to the Colonies, I can tell you that, here in the U.S., the official spelling is aluminum. God only knows how much grief having learned British spelling before being exposed to American spelling caused me. I was a teenager before I could spell color rather than colour and recognize it. The flip side of this is that the younger of my (two) elder sisters made the mistake of asking to be knocked up for school after we returned to the States. The entire junior high school heard of her "request" before the end of that day. She was soooo glad my father was assigned to a parish 150 miles away a couple of months later. |
| AdeV:
--- Quote from: Lew_Merrick_PE on February 15, 2013, 05:18:48 PM --- As somebody who started school in a priory school in Lancastershire before being returned to the Colonies, --- End quote --- One presumes you have deliberately mis-named Lancashire... yes, named after the county town of Lancaster, but like many counties, not taking the FULL name of the town as the name of the Shire. Yes, there are many subtle differences between American and English - a sufficient number these days that, I feel, the two languages really ought to have different names. It's not a criticism, you guys just don't speak English any more... One oddity, we Brits have always been particularly proud of the fact that words like "surprise" or "enterprise" all end in -ise, which we widely regard as correct, and the American "ize" equivalent being some evil bastadisation of the language... in fact, it turns out, "ize" was the old 17th century English way of writing, and "-ise" was a nasty French import from sometime after the American Revolutionary War. So, whilst we (rightly) mock you for your inability to spell colour, flavour and aluminium; you can point and laugh at us for using "-ise" instead of "-ize", and all will be right with the world. Incidentally, my stupid Norwegian browser (Opera) insists that I've just spelt "colour", "flavour" and "aluminium" incorrectly, despite my best attempts to force it to use a British English dictionary. It doesn't even like "spelt", wanting "spelled" instead :wack: |
| AdeV:
PS: Nice fix George, that will make life much easier! :thumbup: |
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