Starrett 199 Master Precision Level - Scraping the Sole Flat and Calibration

Starrett 199 Master Precision Level - Scraping the Sole Flat and Calibration
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[@johnwilcox4078]

Former scraper here from Continental Machines in Minnesota, where DoAll precision surface grinders were manufactured. We also used Biax power scrapers, but only for roughing in the new castings, which were milled and several thousanths off. The last few scraping cycles were always done by hand. The power scraper was thought to save time, but the finish wasn't good enough compared to hand scraping. However, Keith is very adept at using the power scraper as a finishing tool which i never did, and his stuff would probably have passed. Only the foreman and a top scraping hand touched up our fixtures and straightedges, they were always hand scraped.

[@richardgiondomenico6139]

Thank you for sharing your experience. I wish I had a shop teacher like you when I was in high school machine shop. I'm not a machinist anymore but I truly enjoy your content, teaching, and delivery.

[@mrdewity1073]

just a tip. Never touch the glass vial when in use, the bubble will move from body heat. When scraping a large machine base also keep direct sunlight fro hitting it also. It can change your reading.

[@aaronshapiro2542]

Good to see there is proper supervision of the scraping process 8 minutes in.

[@richardbrobeck2384]

thanks for a great video !! I even scraped my drillpress and tablesaw and bandsaw !

[@tudedude]

I was taught hand scraping during my apprenticeship in the 1960s and I still enjoy the process whenever I get the chance - the look and feel of a scraped surface is always a joy for me - like soft silk :-)

[@d.graydraftinganddesign361]

Very nicely presented Kieth, thanks for all your hard work.

[@alanl.simmons9726]

Your teaching about scrapping has taught me so much

[@edsmachine93]

Nice work Keith.

[@older-wiser-better]

At last I understood the idea of scraping . Thank you so much.

[@macw2234]

Hi from the Netherlands. You're a very patient chap. It's a joy following you squire.

[@Rovinman]

Thanks, Keith,

[@toolbox-gua]

Thank you for the lesson and work shown!

[@daveys]

Nice bit of scraping there. I really appreciate those precision tools, they’re just something else when it comes to precision. I recently bought a NOS Starrett 98-6 and it’s a lovely thing to have and use.

[@floridaflywheelersantiquee7578]

Thanks Keith and Jim

[@CraigLYoung]

Thanks for sharing 👍

[@markwatters6875]

Great job sir

[@ericsandberg3167]

I had a friend that found one of these 199 levels at a flea market last year and he gave it to me as a gift, it's in mint condition in the original wooden box. I use it from time to time and sometimes just put it on my surface plate like a piece of art, the original scraping on it from Starrett is flawless and a thing of beauty. Thanks for the great vid Keith.

[@AmateurRedneckWorkshop]

Thanks for another interesting video.

[@mudnducs]

Thank you Sir, from Jonesborough TN!