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long centerd holes

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Forum topic by trz posted 593 days ago 564 views 0 times favorited 3 replies Add to Favorites Watch
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trz

65 posts in 1120 days


593 days ago

what’s the best way to bore a centered hole through an 18 in long 3×3 turning blank?


3 replies so far

View crank49's profile

crank49

3378 posts in 1604 days


#1 posted 593 days ago

Gun Drill

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View JNP's profile

JNP

105 posts in 1211 days


#2 posted 593 days ago

split it, route a channel in each side and glue it back together?

-- Jeff

View Wildwood's profile

Wildwood

1000 posts in 768 days


#3 posted 593 days ago

Lamp auger
http://www.highlandwoodworking.com/lampaugerbit516.aspx
http://www.woodturnerscatalog.com/p/4/-/12/65/-/5330/Turners-Select-3-8%2522-Lamp-Auger

Long drill bits
http://www.amazon.com/Neiko-Tools-USA-Long-Drill/dp/B000VUY5FA
http://www.harborfreight.com/1-2-half-inch-mt2-mini-lathe-drill-chuck-42340.html

Hard to drill out a long blank on a mini lathe without bed extension. Will need a 4-jaw chuck and remove live center from tailstock to use lamp auger. Using long drill bits requires 4-jaw chuck and drill chuck and flipping blank around.

Back out bit, often clearing chips insures a straight hole through blank. A steady rest helps, homemade versions work well.

-- Bill

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