09-26-2017, 08:59 PM
The sub plate will be anchored to the mill table with 6 5/16-18 bolts and will in effect become the new milling table which I think will negate any change made by the milling process once it is bolted down. Once all the spot drilling, boring, tapping and cleanup is done and the new table is anchored I intend to surface with a fly cutter very lightly. My intention here is to end up with a tooling surface that is perpendicular to the spindle or as close as the fly cutter will allow.
I`m also using the spindle to gently scribe the 1 inch x 1 inch grid for boring and tapping. Thinking this should insure the table also being square in the X-Y travel.
I purchased the 6061 plate for $24.00 with free shipping and could not find any steel comparable to that price. The closest I found was more than $50.00 plus shipping.
As far as inserts I am making them out of 7/16-14 all thread bored and tapped 5/16-18 ID. Then just cut them to length on the band saw and cleanup the burrs. I will use red 272 loctite to keep the inserts in place. I have used the red before and it is some tough stuff requiring heat to do any disassembly.
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I`m also using the spindle to gently scribe the 1 inch x 1 inch grid for boring and tapping. Thinking this should insure the table also being square in the X-Y travel.
I purchased the 6061 plate for $24.00 with free shipping and could not find any steel comparable to that price. The closest I found was more than $50.00 plus shipping.
As far as inserts I am making them out of 7/16-14 all thread bored and tapped 5/16-18 ID. Then just cut them to length on the band saw and cleanup the burrs. I will use red 272 loctite to keep the inserts in place. I have used the red before and it is some tough stuff requiring heat to do any disassembly.
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