Socket tray

[Darthmaul1964]

I would like to make trays for my socket set to put in tool box. I can create the rectangles to represent the sockets but can't figure out how to make them curved bottomed rather than flat. Basically, how can I make a half cylender cut into the board?
Thanks for your help

[AskBud]

I would like to make trays for my socket set to put in tool box. I can create the rectangles to represent the sockets but can't figure out how to make them curved bottomed rather than flat. Basically, how can I make a half cylender cut into the board?
Thanks for your help

Assign a Horizontal or Vertical "Dome", to your Carve Region, using the "Select Surface" Icon. You may raise or lower the "Height" to give you a different radius.
AskBud

[Darthmaul1964]

Is there any way to "set" the radius you want? Or do you just have to guess by adjusting the height?

[AskBud]

Is there any way to "set" the radius you want? Or do you just have to guess by adjusting the height?

I would be easier to just adjust the height the way you wish. 999 will bring you up to the board surface, as will any number equal or larger than your depth.
Example: a depth of .500 and a height of 500 will result in an arc to the top of your surface. If you wish some Vertical wall, use a height less than the depth.
AskBud

[Darthmaul1964]

Thanks for the advice. But I guess you are saying there is no way to make a true semi-circle profile into the surface. Just an estimation.

[Kenm810]

Darthmaul1964

How about something like this to play around with?

[Darthmaul1964]

That is the shape I am looking for. But how do you know what to set the height to in order to get a true half circle? For example, if the socket has outside diameter of 3/4" and I want the dept to be 3/8" and cut in as a true semicircle what would the height be to insure the contour matches the shape of the socket?

[Router-Jim]

Ken thanks for the cylinder pattern. I can see a lot of uses for that.

DarthMaul, I believe you set your depth to equal 1/2 your width.

[Kenm810]

I found the half the Diameter of the socket for depth and increasing the height the carve
to adjust the radius at the bottom. -- It's just an experiment so far to work from.

[Darthmaul1964]

Ken thanks for the cylinder pattern. I can see a lot of uses for that.

DarthMaul, I believe you set your depth to equal 1/2 your width.

Jim,
You are saying that if I have a 1" OD socket, I set my depth at .5 and my height to 250 and this will give me a true semicircle cut into board? With these settings, I get the result pictured below. It has partial verticle sides and a curved bottom but not a true semi-circle.

[dbfletcher]

Jim,
You are saying that if I have a 1" OD socket, I set my depth at .5 and my height to 250 and this will give me a true semicircle cut into board? With these settings, I get the result pictured below. It has partial verticle sides and a curved bottom but not a true semi-circle.

Wouldnt you want the depth and height to be the same?

Doug Fletcher

[rjustice]

Thanks for the advice. But I guess you are saying there is no way to make a true semi-circle profile into the surface. Just an estimation.

Darthmaul1964,
You can use a formula to figure the width at the depth that you wish to inset the arc. Rather than confuse everyone with the formula, here is a link to a webpage (http://www.woodweb.com/software_downloads/formulas_spreadsheet.xls) where you can type in your data.
Remember the formula is asking for the radius, so you have to divide the diameter of the socket by 2 to get this to come out right. click on the "Arc's" tab at the bottom, and it is the top "Arc Length" formula. See the pic below. For a 1" OD socket, I inserted a .5 radius, and told it .25 deep. It tells us that we need the width to be .866 wide.
So, if you want all of the sockets at a specific depth, you can leave the .25 number set... and just change the .5 number for each socket diameter (divided by 2) then record all of the widths..
There are many other useful woodworking tabs on this page... be sure to check them out as well!

You have to have Microsoft Excel to open, and work with this spreadsheet however!...

Hope this helps!

Ron

[Router-Jim]

Jim,
You are saying that if I have a 1" OD socket, I set my depth at .5 and my height to 250 and this will give me a true semicircle cut into board? With these settings, I get the result pictured below. It has partial verticle sides and a curved bottom but not a true semi-circle.

If I leave my height at 999 I seem to get a nice round bottom.

[Darthmaul1964]

If I leave my height at 999 I seem to get a nice round bottom.

I agree Jim. It does seem like a nice round bottom. But I was wondering if there was a way to set a height that would insure that you infact have a true half cylendar. I am a shop teacher and can see where the CW could make great patterns for foundry work so I was hoping there was a way to get exact arcs in the bottom of a carved region or if you just have to "eyeball" it.

Thanks everyone for the advice. Keep it coming.

[Router-Jim]

Bob are you using the bottom dome feature or the cylinder pattern that Ken posted? I am using the cylinder pattern.

[rjustice]

I agree Jim. It does seem like a nice round bottom. But I was wondering if there was a way to set a height that would insure that you infact have a true half cylendar. I am a shop teacher and can see where the CW could make great patterns for foundry work so I was hoping there was a way to get exact arcs in the bottom of a carved region or if you just have to "eyeball" it.

Thanks everyone for the advice. Keep it coming.

see my post #12... it will give you exactly what you want

Ron

[Darthmaul1964]

Bob are you using the bottom dome feature or the cylinder pattern that Ken posted? I am using the cylinder pattern.

I am using the cylinder pattern.

[JMD]

Ron,
Could not open the web sight you posted. Can you tell me the formula to do the calculations?

[rjustice]

JMD,

Given that "r"= is half the diameter of the socket in this case (radius)
and that "h"= the depth that you wish to sink it into the material (height)

you will be solving for "c" which is the chord width...

c=2x(sqare root of ((h(2r-h)))

To solve for a 1" socket, you would know that "r"=.5
If you wish to sink it .25 into the wood, "h"= .25

To solve you work the innermost part of the formula first, and work your way out...

So you would take 2x.5=1 and subtract .25... which =.75 then multiply it by .25 which = .1875... Then you take the square root of .1875 which =.433, and multiply it by 2 which = .866

.866 would be the width of the groove, and if you sink it .25 deep, you will end up with a .5 radius (or 1" diameter) which would fit your socket perfectly.

This is really hard to write out, but if you need any further help let me know..

Hope it makes sense..

Ron

[Darthmaul1964]

JMD,

Given that "r"= is half the diameter of the socket in this case (radius)
and that "h"= the depth that you wish to sink it into the material (height)

you will be solving for "c" which is the chord width...

c=2x(sqare root of ((h(2r-h)))

To solve for a 1" socket, you would know that "r"=.5
If you wish to sink it .25 into the wood, "h"= .25

To solve you work the innermost part of the formula first, and work your way out...

So you would take 2x.5=1 and subtract .25... which =.75 then multiply it by .25 which = .1875... Then you take the square root of .1875 which =.433, and multiply it by 2 which = .866

.866 would be the width of the groove, and if you sink it .25 deep, you will end up with a .5 radius (or 1" diameter) which would fit your socket perfectly.

This is really hard to write out, but if you need any further help let me know..

Hope it makes sense..

Ron

Ron,
Good explanation for the formula. It will get you the depth and width of the slot. But my original question was how do you know what height to set in order to insure that you are getting a true half cylender?

[JMD]

Thanks for the reply. Being a machinist for 37 years I should have known that.
I guess the OLD gray matter isn't what it use to be.
John

[JMD]

I am sorry. Didn't mean to leave you out. Thank you also. Didn't look down the page far enough.
Also I think my order will be hear today.
Thanks
John

[AskBud]

let's try this:
Say you have a 1" diameter.
1) You make your carve Area 1"
2) You assign a "Dome" (Radius) of 1/2 the Diameter (.500) and assign a Height of 999 to bring the edges up to the top of the carve.
Note: Remember that you are limited in depth to .800, so your diameter may not exceed 1.6" and keep the 1/2 depth carve.
AskBud

[Darthmaul1964]

let's try this:
Say you have a 1" diameter.
1) You make your carve Area 1"
2) You assign a "Dome" (Radius) of 1/2 the Diameter (.500) and assign a Height of 999 to bring the edges up to the top of the carve.
Note: Remember that you are limited in depth to .800, so your diameter may not exceed 1.6" and keep the 1/2 depth carve.
AskBud

Is there any "reason" for height of999 other than it looks like a half cylender? With this seeming to be an arbitrary number, I don't know what degree of arc you get with any given height number.

[AskBud]

Is there any "reason" for height of999 other than it looks like a half cylender? With this seeming to be an arbitrary number, I don't know what degree of arc you get with any given height number.

True, the 999 is arbitrary in the sense that it only means to rise, the high edge(s), to the top most surface of the carve. You are looking for half the diameter, so your "Arc" will be 180 degrees (half the circle). It, sometimes, is easier to explain than my much earlier post where you assign a height equal to the Depth numeric. The example there was Diameter=1", carve Area=1", Depth=.500, and Height=500. A Height of 999 will accomplish the same thing, and may require less thinking.

Your "arc" will only be 180 degrees, it your carve area is the width of the diameter.
AskBud

[Darthmaul1964]

Thank you to everyone who has responded to this thread. I think my question has been answered and I now have a plan on how to proceed. I will work on this and post the result when/if I get it done.
My goal is to create tool trays for a new 345 pc tool set so the sockets and wrenches won't just roll around in the tool chest. Thought it would make a good project for a student to create the trays and cut them in MDF.

[AskBud]

Thank you to everyone who has responded to this thread. I think my question has been answered and I now have a plan on how to proceed. I will work on this and post the result when/if I get it done.
My goal is to create tool trays for a new 345 pc tool set so the sockets and wrenches won't just roll around in the tool chest. Thought it would make a good project for a student to create the trays and cut them in MDF.

You do understand, that if you had/bought one pre-made tray, you could use the Probe and scan that ready made unit and have much less thinking to do in making your pattern!
AskBud

[dbfletcher]

You do understand, that if you had/bought one pre-made tray, you could use the Probe and scan that ready made unit and have much less thinking to do in making your pattern!
AskBud

Where is the fun in that?? It's good to excersize the old gray matter once in a while.

Doug Fletcher

[Darthmaul1964]

My thoughts exactly Doug. Walk before you run. Make them think before teaching them to copy.

[brdad]

I found this information interesting, learned a few bits once again. I took the liberty of making a list using an Excel spreadsheet. This shows the chord needed to produce an arc that is no deeper in the board than the radius of the socket but also limits the maximum depth into the board. Here is the list for .7 depth as well as the Excel sheet (zipped because the forum won't take *.xls) for anyone interested in playing with it. Listed is 1/16" to 2" in 1/16" increments.

Max Depth:
0.70000



Diameter - - - - - - Radius - - - - - - Depth - - - - - - Chord

0.06250 - - - - - - 0.03125 - - - - - - 0.031 - - - - - - 0.063
0.12500 - - - - - - 0.06250 - - - - - - 0.063 - - - - - - 0.125
0.18750 - - - - - - 0.09375 - - - - - - 0.094 - - - - - - 0.188
0.25000 - - - - - - 0.12500 - - - - - - 0.125 - - - - - - 0.250
0.31250 - - - - - - 0.15625 - - - - - - 0.156 - - - - - - 0.313
0.37500 - - - - - - 0.18750 - - - - - - 0.188 - - - - - - 0.375
0.43750 - - - - - - 0.21875 - - - - - - 0.219 - - - - - - 0.438
0.50000 - - - - - - 0.25000 - - - - - - 0.250 - - - - - - 0.500
0.56250 - - - - - - 0.28125 - - - - - - 0.281 - - - - - - 0.563
0.62500 - - - - - - 0.31250 - - - - - - 0.313 - - - - - - 0.625
0.68750 - - - - - - 0.34375 - - - - - - 0.344 - - - - - - 0.688
0.75000 - - - - - - 0.37500 - - - - - - 0.375 - - - - - - 0.750
0.81250 - - - - - - 0.40625 - - - - - - 0.406 - - - - - - 0.813
0.87500 - - - - - - 0.43750 - - - - - - 0.438 - - - - - - 0.875
0.93750 - - - - - - 0.46875 - - - - - - 0.469 - - - - - - 0.938
1.00000 - - - - - - 0.50000 - - - - - - 0.500 - - - - - - 1.000
1.06250 - - - - - - 0.53125 - - - - - - 0.531 - - - - - - 1.063
1.12500 - - - - - - 0.56250 - - - - - - 0.563 - - - - - - 1.125
1.18750 - - - - - - 0.59375 - - - - - - 0.594 - - - - - - 1.188
1.25000 - - - - - - 0.62500 - - - - - - 0.625 - - - - - - 1.250
1.31250 - - - - - - 0.65625 - - - - - - 0.656 - - - - - - 1.313
1.37500 - - - - - - 0.68750 - - - - - - 0.688 - - - - - - 1.375
1.43750 - - - - - - 0.71875 - - - - - - 0.700 - - - - - - 1.437
1.50000 - - - - - - 0.75000 - - - - - - 0.700 - - - - - - 1.497
1.56250 - - - - - - 0.78125 - - - - - - 0.700 - - - - - - 1.554
1.62500 - - - - - - 0.81250 - - - - - - 0.700 - - - - - - 1.609
1.68750 - - - - - - 0.84375 - - - - - - 0.700 - - - - - - 1.663
1.75000 - - - - - - 0.87500 - - - - - - 0.700 - - - - - - 1.715
1.81250 - - - - - - 0.90625 - - - - - - 0.700 - - - - - - 1.765
1.87500 - - - - - - 0.93750 - - - - - - 0.700 - - - - - - 1.814
1.93750 - - - - - - 0.96875 - - - - - - 0.700 - - - - - - 1.861
2.00000 - - - - - - 1.00000 - - - - - - 0.700 - - - - - - 1.908