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#16
February 18th, 2008
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Just a dumb thought but wouldn't a dove tail bit work and reduce friction also you could put a flat stock Teflon or nylon in there easier and further reduce friction.
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#17
February 19th, 2008
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Not dumb at all - might well work but you will still have the problem with the router bit shaft measuring 1/4'' (6.35mm) so if you are using a 7mm spear there wont be much tolerance to stop the spear jamming in the grove when you fire the gun?
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#18
February 21st, 2008
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Foxfish , just an idea , is it possible to drill a 6.5mm hole with an extension drill like for theading electric cable though wooden standard lamps etc ? Not sure how straight this would be or if a bit that small is feasible , also you probably need to drill the hole early in construction and then machine too it . Sorry if this is bol**cks but it's going to be hard to get a 6.5mm ball cutter with a smaller diameter shank !
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#19
February 21st, 2008
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At the end of the day it would be easier to but a American imperial measurement spear & one of these ? Enclosed UHMW Track for Spearguns
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#20
February 21st, 2008
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Quote:
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#21
February 21st, 2008
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how about just over routing it and glass bedding the spear in like you would a regular gun stock
just a thought
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#22
February 24th, 2008
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How about I use one of these rare beast !!
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#23
February 24th, 2008
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Where'd you find one? Don't lose it eh!
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Do not go gentle into that good night, Rage, rage against the dying of the light. DeeperBlue.net Regional Advisor
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#24
February 24th, 2008
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It would get pretty hot on a stock removal pass, possibly even causing some ignition
 Could you not laminate up a pair of semi circular grooves, then cut a slot in the top and finally use that burr to clean out the track?
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#25
February 24th, 2008
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Would you believe Keyside on the bridge - 7.5mm ball 3.2 shank = £5.00.
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#26
February 24th, 2008
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Yeah you are right mate but good for finishing the final track.
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#27
February 24th, 2008
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Absolutely, if you can get most of the waste out of the way first that could do just the job. How are you thinking of holding it? A Dremel type tool mounted under a table?
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#28
February 24th, 2008
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Ha ha, right under your nose!
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Do not go gentle into that good night, Rage, rage against the dying of the light. DeeperBlue.net Regional Advisor
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#29
February 24th, 2008
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I would think OMD will make up something for me but i have got 3 more derlin tracks to use up first - happy days
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#30
February 24th, 2008
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with that close of a tolerence I would wonder about tool wonder
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