Guys, I want to inlay a circle base into this shape how can I route a round rabbet on the inside of this shape?

Edited October 6, 20187 yr by Pat Meeuwissen
Add pic

I don't understand, do you want to put a wheel inside of the 10 sided what ever it is?

If that is the case I would cut out a piece of plywood to fit the 10 sided bottom . Then find the center and lay out a circle how ever large you want it, and cut it out.

Herb

I'd make a circle template that looks like a donut. The hole of the donut would be the diameter of the rabbeted circle. Use a pattern bit with a top bearing.

 

Something like this-

Edited October 6, 20187 yr by lew

started your lighthouse???

12 hours ago, Stick486 said:

started your lighthouse???

No but have figured out the technique. This is a firkin, working on a set. Making a steam box today to do the rings.

14 hours ago, lew said:

I'd make a circle template that looks like a donut. The hole of the donut would be the diameter of the rabbeted circle. Use a pattern bit with a top bearing.

 

Something like this-

I like this Lew, I hope I have a short enough pattern bit.

No fair! You're using words I've never heard, I had to look it up.

If you are completely comfortable with a router, I would just rout the top free hand (with guide bearing of course), set the router base on top, set the depth and take light cuts, climb cutting mostly with light climb cut passes, the shape lends plenty of support for the router base, and insert a 10 sided piece. Securing the piece solidly may be a chore though.

 

My main concern though, no matter what technique you use, is the integrity of the shape you are working on, if those are only glued joints, you may have a problem with separation at the mitered joints during the operation.

That being said, would it be possible to just cut a 10 sided board and set it flush into the top of the piece? Instead of a rabbet cut? Or, if you want you could do two pieces of wood, one that covers the top completely, and one that recesses in completely, both pieces glued together. Thus avoiding the whole rabbeting issue all together, and then it would be better secured and lend more integrity to the overall structure.

 

Note: Pat, I know I don't have to tell you this, we have all had a brain gas and decided to do something to a project later that we should have done before, especially when making a one off, or a prototype, this stuff pops up all the time. But I'll say it for others who may be new to woodworking, the rabbet cuts should been done before hand, before the piece was assembled and even before the strips were cut.

2 hours ago, Pat Meeuwissen said:

short enough pattern bit.

or double up on the thickness of the template

Now Fred, I have heard of a donut so you must have also.. They say your mind is this the first to                 Can't remember the rest of that verse.

Pat, just a suggestion for next time... Before you attempt the next glue up you might first put some splines in those joints. That's how I solved my alignment problem on these things.

Guys, thanks for the info. I made a circle template and I'm waiting for the blocks I glued to the bottom to dry before routing the rabbet. As I go forward I'm going to route a groove in the staves b4 they are cut. Then I'll taper the circle bottom an glue it in as the firkin gets assembled.

Thinking the bands around the exterior will go a long way to holding it all together. 

Edited October 7, 20187 yr by Pat Meeuwissen

Those are really neat! On the originals, was the bottom routed round or were the staves rabbeted first?

Yes Lew , my wife got me some pics of an original and that's the way they were built.

I was going from internet pictures which never showed the bottom. These are actually used for sugar/sap collection so they needed to be completely sealed like a bucket.

2 hours ago, Smallpatch said:

Pat, just a suggestion for next time... Before you attempt the next glue up you might first put some splines in those joints. That's how I solved my alignment problem on these things.

The staves are only half inch thick might be a little tough to spline them. 

49 minutes ago, Pat Meeuwissen said:

These are actually used for sugar/sap collection so they needed to be completely sealed like a bucket.

Not to de-rail your thread Pat, but do you plan on using them for this purpose?

No they will be strictly decorative

Managed to route the rabbet, got the base made and glued in. 

46 minutes ago, Pat Meeuwissen said:

Managed to route the rabbet, got the base made and glued in. 

 

 

Cool! From the images I googled, that looks more authentic.

1 hour ago, Pat Meeuwissen said:

Managed to route the rabbet, got the base made and glued in. 

AWESOME!!!!!!!!!!!!!!!!!!!!!!