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Post by killitgrillit on Feb 28, 2009 22:14:10 GMT -5
Can't seem to locate the drill bit size everyone is using, can someone help me out. Thx
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Post by Dave W on Feb 28, 2009 22:21:32 GMT -5
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Post by killitgrillit on Feb 28, 2009 22:53:16 GMT -5
My bad, let me re phrase this, I need the drill bit size to make some ventliners.
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Post by smokeless77 on Feb 28, 2009 23:00:27 GMT -5
If you are drilling them .0330 the drill# is 66
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Post by rbinar on Feb 28, 2009 23:06:52 GMT -5
8-)I use 1/32 .0312"
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Post by tar12 on Feb 28, 2009 23:13:08 GMT -5
Can you go a tad smaller? |
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Post by smokeless77 on Feb 28, 2009 23:26:34 GMT -5
If you go on www.prbullet.com, click on new savage ventliners, it may help you with the size your looking for. |
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Post by rossman40 on Feb 28, 2009 23:56:52 GMT -5
You want to go a tad smaller then the finished size, you want to take in the effect of tool flex. For a .031" vent size I went with a #69 drill bit (.0292"). You may not see a difference on the side you finish thru but on the side you started you may see a thousandth or more due to tool flex.
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Post by Harley on Mar 1, 2009 0:07:21 GMT -5
I've always used the 1/32, but my drill press is, as Rossman40 would say, a POS, with a lot of chuck wobble. I didn't know about #69 drills. I'll go to them. What's a good source, please?
Harley
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Post by rbinar on Mar 1, 2009 0:57:02 GMT -5
Can you go a tad smaller? Sure you can. A #68 at .031" or even a #69 at .292 might work. However somewhere along the way it will be too constricted for proper ignition. |
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Post by youp50 on Mar 1, 2009 4:01:18 GMT -5
www1.mscdirect.com/cgi/nnsrhm?KNC-T7L391316886www.drillbitcity.com/Both of these places have carbide drills. Msc has carbide counter sinks. Both have counter people that are very helpful. MSC has a preferred 25 dollar minimum. If you think you may use MSC, get registered on the site. Then watch your e mail, they will be sending you special offers, probably can save a couple of bucks if you are not in a great hurry. If you think you like machine tooling, you probably should stay away from MSC. Its like a kid in a candy store.
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Post by joe21a on Mar 1, 2009 9:50:47 GMT -5
Young50 Have you had good luck using the solid carbide drills in the #68 -# 69 with out them breaking. I had better luck with the cobalt drills.
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Post by ET on Mar 1, 2009 10:48:12 GMT -5
Hope this is useful to have on hand for someone.  Also if you are a first timer at drilling your own vent liners I recommend a screw hardness of 38-40 RC hardness and a drill no smaller than a 1/32” (my choice is a #67) until you get a feel for it. Also keep in mind about a drill chuck being able to hold such a small drill. Not all drill chucks are designed to go this small as I found out. Ed |
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Post by smokeless77 on Mar 1, 2009 11:18:41 GMT -5
If you are doing alot of hunting, IMO I would lean to the bigger sizes for proper ignition, as rbinar said. Misfire at a range is not a big deal.
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Post by tar12 on Mar 1, 2009 11:24:18 GMT -5
If you are doing alot of hunting, IMO I would lean to the bigger sizes for proper ignition, as rbinar said. Misfire at a range is not a big deal. .029 and up will fire everytime. |
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Post by smokeless77 on Mar 1, 2009 11:35:45 GMT -5
Shooting sabotless, I cant take that chance.
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