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The finish quality shown in those pictures tells me that your cutter is nowhere near sharp enough for wood. Do as I suggested, get GOOD cutters like the ones I mentioned,
and your quality of cut...

I get absolutely perfect, totally fuzz-free cuts in maple and mahogany by using G.W. Schultz 1/2" carbide end mills, 2 and 3 flute categories.
I run them in my manual Bridgeport clone at anything...

Use sharper endmills. I use G. W. Schultz carbide end mills which are razor sharp and I get fantastic finishes even though I'm not running them at the kind of RPMs they should be run at in wood. ...

FYI, Grabcad has a lot of downloadable cad files of various types and descriptions, including a fair number of guitar related files.

I never saw those before!

I still think that 30 taper is intrinsically stronger and better suited for larger tools than R8. In particular, R8 has a torque limitation due to the small single...

I realize this is kind of an old topic, but I've started a small project to make a cat30 conversion for my QC30-equipped manual mill.

The spindle taper is the same. Only the nut and retainer...

Cool. I'm glad you did the tap tuning so as to maximize the performance of the guitar.

You did a fine job on that one. I'd love to hear it someday.

It looks great! But did you tap tune the plates? This is very important for maximizing the tonal potential of the guitar. It can't be done by CNC. Tap tuning is hand tuning and it makes all...

sdantonio is misinformed. The proper carve in the cutaway DOES result in the thickness of the maple top being greater than anywhere else around the body.

If you try to reduce the cutaway...

If you want your resulting guitar to be HIGHLY accurate to the specifications of a 1959 Les Paul Standard, you should get yourself this set of templates and use them as data sources.

Templates
...

The tenon on a PRS guitar is like in A in blue.

The tenon follows the width of the fingerboard.

Tenon taper = fingerboard taper.

The tenon is not straight.

The way I taper the...

Thank you.

Here are some specs for you:

Mahogany back thickness: 1.5" for a singlecut. 1.1" for a double cutaway. (Custom 22 or 24) 1/4 inch thicker for a McCarty,
according to what I've...

I just finished building this. Though not a CNC build, it was built with a lot of work done on a manual mill. And a lot of hand work, too.

Specs: Mahogany back with flamed maple top, solid...

Critical eye at work here. It looks to me like your cutaway is 80s spec (too large) rather than 50s spec in size. (Smaller.) But it's a fine looking piece of work either way.

I don't use router bits. I use solid carbide end mills, the best I can get.

My two favorites are G.W. Schultz high helix 3 flute types and Ultratool high helix 2 flute types. The G.W. Schultz...

Cyborg, have you added the waist cut to your model? The waist cut makes the PRS double cutaway design the most comfortable guitar to play that I've ever encountered, beating even a good Strat.
...

That looks VERY good to me. It looks accurate enough that I'd try it, probably on MDF as a starting point, to check it.

Also, I don't know if you're aware of it, but apparently the PRS neck...

Trust me, this is fine. I know exactly what I'm talking about and have prior experience.

The urethane I use actually burns in rather well. More importantly, when I reshoot, I'll reshoot with...

It's urethane.

It looks like in a few weeks I'll have to shoot another couple of coats, as it's showing signs of shrinking back a little more than expected. Fortunately, that's not hard to do.
...

Pics are up.

http://i97.photobucket.com/albums/l234/cmjohnson65/DSC_0345.jpg
http://i97.photobucket.com/albums/l234/cmjohnson65/DSC_0344.jpg...

Thanks.

I can put up a pic or two tomorrow of the cut body section.

The thickest point is 1.912 inches. The mahogany back is 1.125 inches thick, and the maple cap accounts for the rest. ...

The advantage of 4 flute cutters is, of course, a smoother cut surface. But the disadvantage is that you don't have the chip clearance of a 2 flute cutter, and this kind
of negates the advantage of...

I have completely replaced every standard type router bit (both HSS and what the woodworking industry calls a "carbide" bit) with 2 flute uncoated carbide end mills.
I prefer the Ultratool brand. ...

I do see some things that need improvement.

For one, the body of a PRS as seen from the side has a slight angle built right into the body. The peak of the body is just behind the bridge, and it...

Well, I think that you are overthinking this a bit. The minimal material loss in the bottom of a straight fret channel on a radiused fingerboard still doesn't seem to be any sort of factor in...

When have you ever seen a fingerboard break at a fret slot? I submit that this rare (virtually non-existent) event is proof that a straight across slot is perfectly reasonable. It always has been....

Why not take the simplest and most direct approach?

Cut the fret slots straight across. No need to arch the slot! In fact, you want a little
excess slot depth anyway as it gives room for any...

The job is completed. It's running. I'm now in the process of installing a new multi-point lubricator system on it to replace the original one that threw a seven. I went with a larger quart...

In my limited experience, YCI machines are based on Bridgeport designs very closely but dimensionally they are a bit different, sometimes.

If the item in question mounts to a bearing, you'll have...

...and though this is nominally a part-for-part Bridgeport clone, I found that there were a few differences that I had to deal with.

Just in case this is of any interest to ANYONE, I'll tell you...