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| One of Us |
Hey, What is the best method for delivering epoxy to a hairline crack? I put a crack in the tab of wood (this is a laminate stock) right behind the bolt handle slot. The wood did not break off - it just cracked and from the inside (inletting side). I have heard that one of the Brownells two-part epoxy can be applied with a syringe and needle. Any advice would be appreciated. NorthGaAire | ||
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I use West System epoxy w/syringe. Be sure to use slow hardener with whatever brand you use. If you can open crack a little, that is a big help. Clean up with denatured alcohol. | |||
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I use my air compressor set to about 15 Lbs psi to gently blow the epoxy deep into the crack.  Doug Humbarger NRA Life member Tonkin Gulf Yacht Club 72'73. Yankee Station Try to look unimportant. Your enemy might be low on ammo. | |||
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I swear by liquid Acra-Glas for most repairs. However, if the crack is truly "hairline", Acra-Glas is not good for wicking into it, because it's too viscous. You are better off with the Cyano-Acrylate(a super crazy glue), of water-like consistency, made by Satellite City. Because it is of such a thin consistency it wicks right into the crack by capillary action. It's the best that I've found. I buy it at Lee Valley Tools. | |||
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 As usual just my $.02 Paul K | |||
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A method that works for me is to put a small amount of acraglas on top of the crack, then heat it with a hair dryer. The heat causes the epoxy to flow like water. Mark Pursell | |||
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Heat does it for me also, I use a wood match from the top, get it close enough and it will run. | |||
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If you can drill a small hole into the crack from the inletting side Then you fill the drilled hole with epoxy, apply a bit of heat and turn the drill and press epoxy into the crack with "hydraulic pressure". Works really well if you can drill the hole in line with the crack. The compressed air-metod workes well to! _____________________________________________ The bitter taste of poor quality stays in the mouth far longer than the sweet taste of the low price! | |||
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IIRC someone mentioned a similar method a while back. Their method was to drill the hole and fill it with epoxy, then use a tight fitting dowel or punch as a piston to force the epoxy into the crack. Jason "You're not hard-core, unless you live hard-core." _______________________ Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt. Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure. -Jason Brown | |||
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Thanks for the responses. The 15psi of compressed air worked perfectly. NorthGaAire | |||
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+1 on the compressed air driving the exoxy deep into the crack. I then use surgical tubing to pull the two parts together tight, so the crack is bearly visible after the epoxy cures. | |||
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Don't mention it. Glade it worked for you. Doug Humbarger NRA Life member Tonkin Gulf Yacht Club 72'73. Yankee Station Try to look unimportant. Your enemy might be low on ammo. | |||
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