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Help! Round (bowl) bottom forstner-type bit?

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Forum topic by newTim posted 12-05-2009 07:32 AM 4461 views 0 times favorited 7 replies Add to Favorites Watch
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newTim

597 posts in 3067 days


12-05-2009 07:32 AM

Wouldn’t it be nice to have a 3” to 4” diameter forstner bit with a bowl shaped bottom? It would make cutting round bottom dipping bowls in cutting boards alot easier. I know I could use a round template and/or regular forstner bit, but I would end up with a flat bottom and straight walls.

Has anyone heard or seen such a thing? Anyone have another solution?

-- tim hill www.newcalshop.com


7 replies so far

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scrappy

3506 posts in 2891 days


#1 posted 12-05-2009 08:02 AM

Dish Bit for the router?

http://www.rockler.com/product.cfm?page=1520&filter=router%20bit

-- Scrap Wood's the best...the projects are smaller, and so is the mess!

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Dennisgrosen

10850 posts in 2576 days


#2 posted 12-05-2009 08:14 AM

I don`t now If you kan find any help from the makers off the kalaha who maks the board aut off wood they most deffenly use somthing like that

Dennis

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TopamaxSurvivor

17654 posts in 3136 days


#3 posted 12-05-2009 08:17 AM

It shouldn’t be too hard to make a paddle bit in that shape. Use a Forsner bit to remove the bulk and finish up the shaping with teh home made paddle bit.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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newTim

597 posts in 3067 days


#4 posted 12-05-2009 09:28 AM

Thanks all… Dish bit for router @ 1 1/4” = right idea, but to small. This is what I’d like to do. I figure if I had a bit with a round bottom I’d use a forstner or circle pattern to rough out the hole then clean it up with the (giant) bowl bit.

-- tim hill www.newcalshop.com

View interpim's profile

interpim

1158 posts in 2919 days


#5 posted 12-05-2009 10:04 AM

My father used to have a bunch of custom made rosette’s for heavy duty shaper. One of them would create a fairly large diameter dish.

-- San Diego, CA

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newTim

597 posts in 3067 days


#6 posted 12-05-2009 10:12 AM

It wouldn’t have to be very deep. Maybe 3/4” to 1” or so. I’d like to find a relatively quick way to make these cuts so I could have maybe 3 – 5 in a board. An ogee type shape with a round bottom that would round over the edges would also be great. Anyone have any ideas? I think lots of LJs would use this.

-- tim hill www.newcalshop.com

View Bob #2's profile

Bob #2

3809 posts in 3482 days


#7 posted 12-05-2009 02:52 PM

As each bowl would likely have a different diameter would be difficult to have one bit do it all.
In addition, the bowls you could make would all have to have an opening not smaller than the diameter of your drill.

Your time might be better spent on learning how to use a bowl gouge than designing a one trick pony.
A round nose shear scrap is great for blending the base into the wall of a vessel.

Bob

-- A mind, like a home, is furnished by its owner

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