How to cut a perfect 2 7/16" diameter circle...

[Todd Burch]

This guy did what you are saying you need to do. Good video. http://www.garagewoodworks.com/video...7&category=all

Crack me up. What a hack.

[Keith Outten]

You do realize you can use a piece of scrap, maybe plywood, to make an auxiliary table, with no insert and use the saw?

Perry

Perry,

Thats what I did on my scroll saw and it works great but I have a sliding table that I use on my band saw every day and my fence probably wouldn't clear the aux table.
.

[Chris Padilla]

Hobbyist loudspeaker makers use a router jig to make holes for tweeters and midrange speakers. It should work for your app.

http://www.jaspertools.com/productsd...Circle%20Guide

I think I own all the Jasper routing jigs...nice stuff.

[Michael Dunn]

Hobbyist loudspeaker makers use a router jig to make holes for tweeters and midrange speakers. It should work for your app.

http://www.jaspertools.com/productsd...Circle%20Guide

I did that same trick when I used to make speaker cabinets.

[Michael Dunn]

CNC it is!!! Check it out!!! It took like 5 minutes to make the ngc file for EMC2 (my CAM software). About 90 seconds to make the first one. Another 2 minutes to adjust the ngc file. Then about 10 minutes to make the next 5 ZCI's. so now I have 6 perfect ZCI's for my BS.

Here's a quick video...

http://www.youtube.com/watch?v=-xveQQesdPc

[Michael Dunn]

I just watched it for the first time. Sorry it's so nauseating. The camera work. My HD cam is broke. Haven't had the chance to repair it.

[Roger Rayburn]

That looks great!!! Except a bit dangerous to cut that close to the blade by hand without a table insert.

When you said you needed to make some ZCIs I didn't realize that you didn't have an insert at all to begin with. Under those circumstances I'd do the first one with a coping saw.

[johnny means]

Jig

ForumRunner_20130409_173653.jpg


Blank

ForumRunner_20130409_173724.jpg


Blank on jig

ForumRunner_20130409_173807.jpg


Blank on jig on disc sander

ForumRunner_20130409_173852.jpg


Rotate and sand

ForumRunner_20130409_173910.jpg


Done

ForumRunner_20130409_173927.jpg

This jig took me less than one minute to make and will yield perfectly round, sanded, square edged circles. You could even get fancy and make an adjustable reusable version.

[Mark Bolton]

This is all too funny. How many ever people offering up suggestions and then "oh.. Wait, I have a cnc over in the corner". ;-)

A lot of good data for the archives lol.

[Michael Dunn]

This jig took me less than one minute to make and will yield perfectly round, sanded, square edged circles. You could even get fancy and make an adjustable reusable version.

Nice!!! I could've done that too. Didn't even think of it.

[Michael Dunn]

This is all too funny. How many ever people offering up suggestions and then "oh.. Wait, I have a cnc over in the corner". ;-)

A lot of good data for the archives lol.

I know, right? Smart enough to build my own CNC mill and make close to $40k with it over 4 years, yet dumb enough to forget to use it for something so perfect. Duh!!!

[Mark Bolton]

and make close to $40k with it over 4 years

Looks like your "leads" are right in front of you. 10k/yr in sales is easier to build on than 0

[Michael Dunn]

Looks like your "leads" are right in front of you. 10k/yr in sales is easier to build on than 0

Well, I see what you mean. However, there's no local market for what I do. I shouldn't say none, just minuscule.

I modify guitars. Electrically. I install piezo transducers beneath each string of an electric guitar which offers a convincing acoustic guitar simulation. I use my CNC to machine the saddles and the base plate of the bridge. Then I use my OF-1400 and custom templates to rout LR new control cavities.

People from all over the world have shipped their guitars to me. It's just a niche market. I suppose I could expand and do other things with the CNC. I really don't know a ton about CNC's. I've learned enough to be dangerous with what I've needed to do.

Anyway, back to my OP topic. Here's some pics of the CNC'd ZCI installed. I cut the blade kerf a bit wider since I heard it rubbing.

This saw actually kicks butt now.

I threw in some bonus pics of some successful resawn pieces too.

Whaddaya tink?

[Jim Matthews]

Okay - if no one else will say it -

That's clever, right there.

[Michael Dunn]

Okay - if no one else will say it -

That's clever, right there.

Which part? The CNC machined ZCI or what I mainly use my CNC for?