Rosette router bit

[Troles]

Building my first aucoustic guitar. Ready to start cutting the slot for my remade rosette and then cutting the sound hole out.
Just bought a small laminate trimmer/router and am starting to make a jig adjustable base for it like blogjovich has in his book.

Question is, I have used routers before, but just with regular bits. I hear about " down cut spiral bits" etc....what is best bit to buy for precise cutting of rosette slot, etc. name or descriptions would be great or even a link to buy on amazon, etc

Thanks for help and advice.

[Ned Milburn]

A standard good quality fluted bit should do you fine.

[Jim.S]

Stewy Mac

Precise bits

Jim

[LouieAtienza]

Lmt/onsrud makes some of the best.... for downspiral 64 series...

[mb propsom]

Like Jim S, I recommend Precisebits.com for downcut bits. Good product, great prices.

[Tom West]

Troles: For me the cut of the bit does not matter as much as the sharpness. Use the SHARPEST bit you can find.
Tom

[LouieAtienza]

Why I recommend Onsrud downcut spiral-o flute 64 series. Razor sharp, highly polished flute, has more of a shearing cut than other bits I know of.

[charles Tauber]

Originally Posted by Tom West

Troles: For me the cut of the bit does not matter as much as the sharpness. Use the SHARPEST bit you can find.
Tom

That is my experience as well. Before diamond sharpening stones were common, I used high speed steel because it was easy to sharpen (and keep sharp). To sharpen your own bits, keep the flute geometry simple.

[redir]

I would just like to suggest that the bit of course is important but even more important is a circle cutter so you can score a razor sharp line on the inside and outside edge of your rout. That way even if you are using a less than desirable bit it won't tear out and soft wood fibers.

[Troles]

Thanks all, bought a down cut bit and am going to route my first ever rosette groove next week. Will keep you posted.

Another question. When I glue in rosette...titebond or epoxy? I read somewhere that titebond can cause swelling cuz water based and mess up glueing in rosette, etc. thoughts?

[LouieAtienza]

Sometimes the swelling can help, as far as tightening any gaps. I haven`t used epoxy yet. I think it would work well if you use shell in your rosette....

[bnjp]

I use a downcut spiral bit. Accidentally used an upspiral one once. Don't do that!

[Halcyon/Tinker]

Or sometimes the swelling can make your close tolerance parts no longer fit.

These days, I carefully cut the channel, and dry fit the pieces. If everything goes in well, I carefully remove them, seal the channel with dewaxed shellac, wait for it to dry, refit the parts, and flood it with thin CA...

[Halcyon/Tinker]

Oh,,and +1 for spiral down cut...

[Neil K Walk]

I'm a stark newbie myself but on my first I was told to seal the wood with shellac prior to the routing then apply more afterward to seal it back up then using CA glue. FYI: CA glue will seep into the end grains otherwise and reacts adversely with certain finishes, producing a "day glow" effect. The benefit is that it won't expand and unless there are excessive gaps/tear out the purfling should stay put while sanding or scraping it flush.