2018 Archive

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Today i stopped by the local tool/ flea market, it was a hot day and i did walk thru all the rows but only found couple of things, first was this machinist clamp, little rusty but still usable, next was this nos pressure gauge good quality, it was same price like new china gauge but i'm sure it will last more then the china one, at the same vender bought this set of wheels and lasly bought this Crane Trolley, factory made probably lighter duty then what i would build but for the price of the bearings it seam like a good deal.
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Nice i was going to bid on a lot of endmills and boring bars but the price jumped higher then id like to spend for mystery cutting edges
 
These go with the 1-2 I already have. I will on the hunt for a 0-1 and 4-5. Also need a spanner and standards.
 
Until you find a proper set of standards, you can make your own. I would use some 1/4" diameter stainless rod and cur slightly oversized, !", 2", 3", 4", and 5" lengths. Dress the ends to square them in a lathe using a Dremel tool and cutoff wheel. Measure the 1" length with a 0-1" micrometer and remove the excess length. Use the finished piece to calibrate the 1 - 2" micrometer and repeat the process. Repeat for the remaining pieces.

You can simplify the process by grinding the standards to slightly larger than the ful inch size. All my micrometers are capable of measuring .025" to .100" over their nominal size. Grind the standard to something between nominal and .025" oversize, measure and record the actual length and tape to the standard.

If you have the opportunity to do so, it would be good to verify the standard lengths with measurements using known good micrometers.

The process isn't foolproof as any measurement error will propagate through the standard set. but it will allow you to use your micrometers while you are looking for a proper set of standards.
 
RJSakowski said:
Until you find a proper set of standards, you can make your own. I would use some 1/4" diameter stainless rod and cur slightly oversized, !", 2", 3", 4", and 5" lengths. Dress the ends to square them in a lathe using a Dremel tool and cutoff wheel. Measure the 1" length with a 0-1" micrometer and remove the excess length. Use the finished piece to calibrate the 1 - 2" micrometer and repeat the process. Repeat for the remaining pieces.

You can simplify the process by grinding the standards to slightly larger than the ful inch size. All my micrometers are capable of measuring .025" to .100" over their nominal size. Grind the standard to something between nominal and .025" oversize, measure and record the actual length and tape to the standard.

If you have the opportunity to do so, it would be good to verify the standard lengths with measurements using known good micrometers.

The process isn't foolproof as any measurement error will propagate through the standard set. but it will allow you to use your micrometers while you are looking for a proper set of standards.
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Very smart! Thanks
 
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