My very first build a Prewar Dread

[ken cierp]

Looks good

As for the neck fit, I am not sure what KMG process you were using or referring to in that regard. Basically we specify that you match the neck heel angle to the rim and if need be tweak the soundboard prior to cutting the binding channels. Since you did not have the neck on hand and still moved forward I am not seeing how our system applies to your build at all.

I have to say as well -- I simply hate when a mentor implies that the first build is just a test ground and poor fits and missed steps are the norm. I would sight that in addition to all the KMG kits that have been assembled properly following our instructions there have been thousands of guitars assembled with our tools and process -- in common with the kits, they do not suffer from the maladies you have encountered relative to neck fit. I will quite pontificating -- but every new builder needs to understand that neck fitting need not be a tedious repair by trial and error -- it is a simple mathematical process that needs to be "right, right from the start"

[Michael_K]

Ken,

You misread into my post. I took full responsibility for my error and by no means blamed he KMG process or anyone else. But I stand by my statement that one should find one set of instructions and use that from start to finish at least while building the body. There were several errors on my watch.

I will state my expertise is DRILLING FLUIDS CHEMISTRY. I help drill 20,000 foot horizontal oil wells. This is a hobby.

The way understood the 2 sets instructions is there are 2 schools of though regarding sloping a top rim. Some use the radius dish method on the soundboard and some use the Martin method of sanding completely flat and adding a slight 1.5 or (whatever the 2 angles form 180 degrees). Now if one starts mixing and combining two schools on though on the same instrument. There COULD be geometry problems.

So before we get defensive, I need to clarify. I didn't buy a kit from you nor anyone else. I built this from individually bought components. My local luthier stated, "Most kits are built and geometrically designed to come together. That is why most start with a kit." I asked him to scrutinize my work. If it looks like $%^$%, then to tell me. When I went through basic training in the Army the DI rode our tail to make us better. I am not in the "feelings" business. :) The errors made were execution errors. A person can follow all the steps but still miss the execution.

I have never learned anything in my life by doing it right the first time.

So I apologize if you felt I was pointing fingers or scrutinizing any part of anyones process. I will be the first one to point. I am learning as I go. While some things are simple, that does not mean they are easy. If it were everyone would do it and do it at an expert level.

[ken cierp]

But I stand by my statement that one should find one set of instructions and use that from start to finish at least while building the body.

Agreed -- but the radius dish concept results in a trial and error build every time. $.02

[Michael_K]

Ken,

You have been awesome through this whole process. I bought some pre radiused and scalloped braces from someone else radiused to 28'. Next time I will use your method and use a more flat radius on the X, because I find it "simple" and easier to check, and recheck. At the end of the day, no matter how pretty it is, if it is unplayable, well. I lost.

I just ran an angle on the body to rim. It is setting between 90-91 degrees. Which tells me I did not slope the rim correctly. I looked at my order and I ordered neck at 91.5 + 90.5 = 182. Now that neck could have changed with sanding. I will check it once I steam it off.

I just got the protractor square. I will go purchase a digital one. and If one has a suggestion on a digital protractor thats works well building guitars the without breaking the bank, please send me a link.

I will fix it, and NEVER make that mistake again. I post my mistakes rather than hiding because maybe someone might learn from mine.

[ken cierp]

Like you mention its great to have these construction logs as reference for learning the craft. One thing you indicated "I looked at my order and I ordered neck at 91.5 (degrees)" seems odd -- the neck heel is normally negative, like 88.5. Actually I am not even set up to make a neck 90 plus at the heel.


http://www.kennethmichaelguitars.com/neckangle.html

[Michael_K]

You are very correct. I was reading the prints. It just says 1.5 on the proof sheet. I assume is 88.5?

My steam needle will arrive Wednesday and I will pop the neck. I will take proper angle measurements and get your guys advice on best way to proceed.

This is why I am glad I have your guys help.

Thank you for all help!

[Michael_K]

Hi guys,


I got my neck pulled without too much hassle. So as soon as the neck dries, I will finish my reset and finish this one for all. It has been a fun experience. It has given me so much respect for the people in this craft. So many things have to line up for a beautifully sounding, beautiful looking, and wonderfully playing instrument.

Regards,

Mike