neck deflection

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tony
PostPosted: 01/15/2008 at 12:35 PM    Post subject: neck deflection


I am in the process of completing my second 6-string guitar neck. I am faced with an interesting delema and could use your opinion.

My first neck is fat. probably a little fatter than I need but it works for my larger hands. It is also basiclly solid eccept for a 1/2 inch channel I cut to eliminate some of the weight, prior to making a final cut to insure flatness. It is dead flat, the action and playability is fine. Flex was never an issue with that neck.

Neck two is a different story. A major goal with this guitar was weight reduction. This neck is much thinner and has more channel. It also has gone from flat to convex in the material removal process. I would estimate 3/16 inches over a 25 inch length. I can finish cut it flat again without too much trouble but I begin to wonder how much will the tension of the strings deflect the finished neck back into straightness. It dosen't seem to require much force to move the neck with one end in a vice. I can move it straight with on finger.

All I'm looking for is an opinion based on your experience. Since I have no adjustment I need to guess correcty now. I used 7075 for both necks.

Thanks
Tone



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Ken Francis
PostPosted: 06/29/2013 at 2:15 PM    Post subject: RE:neck deflection

You could run a line of heat on the back of the neck lengthways to make it bend back slightly But be warned it will move in the other direction first! Then it will pull back! The amount of pullback depends on the amount of heat applied ! Loosen strings first! I've worked aluminum a long time and have finally gotten into making my guitars from the stuff! And necks! Or get someone with welding skills to help! They will know of what i speak! Hope that helps.
Ken

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tone
PostPosted: 06/19/2015 at 8:41 PM    Post subject: RE:neck deflection

Thanks ken. That's good info. I'm getting back to work on that guitar so I'll give it a try.

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