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Will this diagram work? (Read 145 times)
 
Don R Davis
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Will this diagram work?
Oct 4th, 2019 at 8:04am
 
I want to build a salad server bowl 10" across and 4 1/4" high with a 1/2" thick base. It will have 24 segments per ring. All rings will be 3/4" thick except for the top ring and it's 1/2" thick. The base is 5" across and the wall thickness of the bowl will be 1/4" thick. I know my diagram is not very good but maybe you can figure it out. Please ask questions if needed.

Thanks Don
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Don R Davis
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Re: Will this diagram work?
Reply #1 - Oct 4th, 2019 at 8:06am
 
I forgot the diagram.

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Ed Weber
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Re: Will this diagram work?
Reply #2 - Oct 4th, 2019 at 8:39am
 
Your diagram looks fine but I would make ring #2 thicker.
You haven't left yourself much room for error.
#2 is the primary transition piece (along with ring#1) you need to give yourself enough material to allow for alignment errors and more importantly, profile changes.
Once the piece is mounted and trued up, you may want to round off or ease the curve differently that what you have drawn in your diagram. Giving yourself enough material to do this can make a huge difference in the overall look of the piece.
Don't let your construction put limitations on the appearance of your piece (as much as possible)
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Don R Davis
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Re: Will this diagram work?
Reply #3 - Oct 4th, 2019 at 9:08am
 
Thank you, Ed you are always here to help me and everyone else. We all appreciate it.
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Ed Weber
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Re: Will this diagram work?
Reply #4 - Oct 4th, 2019 at 10:10am
 
Not a problem
Look at where the outer edge, on the top of ring #2 is, it's almost touching the line (AKA  no material)
If you were to have an issue, it would be here.
Just make the #2 ring stock a little wider so that you have some more material to work with, without being so close to the line.
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« Last Edit: Oct 4th, 2019 at 10:11am by Ed Weber »  
 
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Ralph Fahringer
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Re: Will this diagram work?
Reply #5 - Oct 4th, 2019 at 10:13am
 
If I may offer a couple of design thoughts...

First, consider the posibility of not having the walls straight...make it a gentle curve to the rim. That way it gives a user an edge to gather against as well as looking better in a design way. It doesn't have to be a lot, just not straight up.

Also maybe the wall thickness could be thicker as 1/4" is not very strong for continous use. In my thinking, it is too thin to withstand the possibiity of someone not being very careful with it. Consider the possibility of kids using it.  Again, not alot more maybe 3/8".

Remember, these are my 2 and worth exactly that. Smiley
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Don R Davis
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Re: Will this diagram work?
Reply #6 - Oct 4th, 2019 at 10:53am
 
Thank you, Ralph, you have some good suggestions.
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Ralph Fahringer
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Re: Will this diagram work?
Reply #7 - Oct 4th, 2019 at 11:29am
 
  Thumbs Up
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Grant Wilkinson
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Re: Will this diagram work?
Reply #8 - Oct 4th, 2019 at 1:45pm
 
I'm with Ed and Ralph. Also, for rings 4, 5 and 6, you have given yourself 3/4" to hollow away on the inside, but only 1/4 to shape the outside. Assuming that you are not locked into the drawn dimensions, that is not an issue. You could turn 1/2" inside and out, keep the same segment dimension and simply end up with a slightly different sized bowl.

As Ed mentioned, you have not given yourself any wiggle room at all with ring 2. For all other rings, you are turning away 1/4" to get to the outside dimension. Like Ed, I suggest that you give yourself at least that and preferably more for ring 2

You don't say what wood you are using, but a solid base 5" across and 1/2" thick could move over time, blowing your bowl apart. You might want to consider a floating bottom instead.
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Grant Wilkinson
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Don R Davis
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Re: Will this diagram work?
Reply #9 - Oct 4th, 2019 at 3:29pm
 
I have not heard of a floating bottom. I have heard of the base moving.
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Grant Wilkinson
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Re: Will this diagram work?
Reply #10 - Oct 6th, 2019 at 5:49pm
 
Don: Search on "malcom tibbetts floating base". You will see a lot of information on how to construct a floating base, which will eliminate any issues arising from a solid base moving and blowing your piece apart.
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Grant Wilkinson
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Ed Weber
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Re: Will this diagram work?
Reply #11 - Oct 6th, 2019 at 7:01pm
 
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