Posted: 4/1/2008 4:48:38 PM EDT
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I have a rifle stock that has a pistol style grip. Due to an issue with a crack developing I need to reinforce it. My plan is to drill a hole fromt he top of the stock (just behind the reciever) and cement a reinforcing rod into place. I want to use a JBweld type cement and either a threaded metal bolt (like a 1/2" bolt) or a teflon/polymer rod. My question is how much play should I allow when I drill the hole for the cement to occupy when the reinforcing element is in place? The polymer rod I have is 0.015" under sized from the 5/8" forsner bit that I have (nearest size I have to fit the rod). Thanks. |
I would take a dremel and feathers each side of the crack (bevel) If it is a composite stock use something like acraglass from brownells. Bob |
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JB Weld doesn't "flow" real easily unless it's fairly warm... but the flipside to that is, it will cure faster... leaving you less time to fool around. Personally, I don't think .015" is enough space to get JB Weld in to... I would make the hole larger and fill it partially with JB Weld... then I would push the reinforcing rod in to the hole, forcing (hydraulicing) the JB Weld back out. Edit to add: You have a MAK90, huh ? (they ALL crack) |
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Don't use the plastic rod, it won't bond to the adhesive. Use a hardwood dowel or a metal reinforment rod. The reinforcment can be cut from a bolt, a piece of all thread, or a hardened piece of steel rod. Brass is okay. 0.015 to 0.020 inches clearance on the diameter is just about perfect for a bond line thickness when bonding with epoxy, with few exceptions. |
use a wood dowel and titebond 3 |