MAKING AND USING LARGE DIAMETER LAPS

Design of a easy to make large diameter ID lap system. Showing all the machining steps of making two new sizes of lap rings. And lapping two D2 tool steel parts at 60 RC hardness using these laps and diamond slurry.

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Great synopsis of the video by brs_workshop

"Shop Notes"*
• Explanation of project and overview of the lap design
• Facing and turning the lap
• Creating the reliefs with the DRO bolt pattern function
• Cutting the flexure slits with the bandsaw
• De-burring with a pencil type air grinder (looks like a Dotco model).
• Blue Moly links:
McMasterCarr: https://www.mcmaster.com/#bostik-never-seez-blue-moly-antiseize-lubricants/=19pflvg
Amazon: https://www.amazon.com/Never-Seez-NBBT-8-Anti-Seize-Compound-Temperature/dp/B001HWBSTM/
• Turning and cutting the grooves
• TapMagic Aluminum:
McMasterCarr: https://www.mcmaster.com/#tap-magic-cutting-fluids/=19v2sp7
KBC Tool: https://www.kbctools.com/products/FLUIDS/CUTTING%20FLUIDS/TAPPING%20FLUIDS/3073.aspx
• Lapping the parts with 15µ diamond
• Aerosol lube is Stoner brand lube with PTFE (not surprising, it cannot be sold in California).
Stoner's website: http://www.criticalcleaning.com/products/product?Category=lubricants&Item=A194
• 3M 467 Adhesive Transfer tape:
McMasterCarr (60yd): https://www.mcmaster.com/#adhesive-transfer-tape/=19s264m
Amazon (.5 in/20yd): https://www.amazon.com/dp/B007Y7CQ1S/
(other sizes): https://www.amazon.com/467MP-Performance-Adhesive-Transfer-0-125/dp/B00P26Z04I/
3M's website: https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Adhesive-Transfer-Tape-467MP?N=5002385+3293242532&rt=rud
• Using inside mics as a measurement transfer tool with outside mics
• Crack in D2 stock

*Not affiliated with any manufacturer or distributor. Links for convenience.