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| Countersinking http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=23079 |
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| Author: | jsmith [ Tue Jul 14, 2009 10:38 am ] |
| Post subject: | Countersinking |
I'm thinking of doing a bolt-on neck on an SJ that I'm building. The problem is that I've already built the body and did not pre-drill or countersink the heel block. I don't have any problem with drilling the bolt holes, but would like any advice on countersinking the block for the washers & nuts. Thanks in advance. Jay |
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| Author: | Terence Kennedy [ Tue Jul 14, 2009 10:50 am ] |
| Post subject: | Re: Countersinking |
Aircraft tool suppliers carry "reverse spotfacers" Here's one link. www.theyardstore.com Do a search for "spotfacer" and you'll find the reverse ones. Get a shaft the same diameter as your hole and a spotfacer the diameter of your washers. They are good for putting an end jack in a guitar with a thick tailblock too. TJK |
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| Author: | Tom West [ Tue Jul 14, 2009 3:34 pm ] |
| Post subject: | Re: Countersinking |
Why do you want to countersink? Here we just use hardware from Lee Valley,flatheaded bolts with about a 5/8" round head made to be tightened by an allen key. They have a bronze color to them and I think look classy.Also gives folks in the future a heads up to how the neck comes off. |
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| Author: | Tom West [ Tue Jul 14, 2009 4:35 pm ] |
| Post subject: | Re: Countersinking |
Have reread your post and now I gather you are using lag bolts....????? Think that most folks use inserts or barrel nuts with headed bolts...? |
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| Author: | Darrel Friesen [ Tue Jul 14, 2009 5:44 pm ] |
| Post subject: | Re: Countersinking |
He's likely using hanger bolts. The type with one end with wood threads and the other with UNC threads. |
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| Author: | wolfsearcher [ Tue Jul 14, 2009 5:47 pm ] |
| Post subject: | Re: Countersinking |
theres an article called spanish heel neck reset an impossible job ? Frank Ford talks you through he uses a bit and reverses the cut on it i did something simmilar but instead of using the bit he used im using a a normal contersink bit (sorry dont know the name of it ) but its the flat ones with the spear head shape on the top i basically squared off the bottom the same way as the other side cut into the taper with a rough bastard file till its the same radius as the bit duplicate the cut on the new cutting side and i always make sure its sharp |
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| Author: | jsmith [ Wed Jul 15, 2009 3:17 am ] |
| Post subject: | Re: Countersinking |
Yes, Darrel I'm planning on using hanger bolts, and, Terence, the reverse spotfacer is exactly what I'm looking for. Thanks all for your suggestions. |
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