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6th May 2014, 08:32 PM #16GOLD MEMBER
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That could well and truly be correct for the thread diameter you worked on but it has changed.
Mine could be a bit tight
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6th May 2014 08:32 PM # ADSGoogle Adsense Advertisement
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6th May 2014, 08:34 PM #17SENIOR MEMBER
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6th May 2014, 08:58 PM #181915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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6th May 2014, 10:39 PM #19SENIOR MEMBER
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Thanks Ew,
Now, to cancel one senior moment...
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8th May 2014, 03:41 AM #20GOLD MEMBER
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uns thread
thanks pipeclay,ew ,phil,lex and every one.
ya i messed up the size its 4.5 not 2.5.
as far as class of fit if im going to use this as a thread gauge
for up coming jobs what class would be best to make this?
aaron
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8th May 2014, 06:06 AM #21SENIOR MEMBER
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Hi Aaron,
not sure if I am too late or not but,
basic dimensions for minor diameter of an internal 4 1/2" 6 TPI thread is 4.3196".
Phil
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8th May 2014, 09:48 AM #22GOLD MEMBER
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never to late
may of been phil but i didn't have any thing to measure internally last night.
plus my out side mic the right size is not here either.
so thanks.
how do i figure out the minor dia or doc.
aaron
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8th May 2014, 11:13 AM #23Senior Member
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Aaron, your bored hole IS the minor diameter, the theoretical Major diameter is simply the nominal size, in this case 4.5". So the depth of cut will be 4.500" minus 4.320" to 4.3396" divided by 2.
Regards, Lex.
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