cube inside a cube

[mattty]

[ame]https://www.youtube.com/watch?v=AuS6HDHc7XE[/ame]

Has anyone here made this before? if so where would i find the meaurements.

Very good video, he makes it look very easy.

 

[Swifty]

Very neat, I can see a flurry of cubes being made. Wood turners also have a version of this type of thing.

Paul.

 

[Jyman]

There are called a "turner's cube", and I don't have any measurements but if you google "turner's cube" I'm sure some close to the top will have some measurements


Sent from my iPhone using Model Engines

 

[Tin Falcon]

Also an interesting CAD project.
there is a FreeCAD tutorial on drawing one ans yes give dimensions.
the more important thing is proportions and ratios. How long is a piece of string ?
This is an artistic piece so overall size will depend on taste and available material.
Tin

 

[xpylonracer]

Article for cubes was in 'Digital Machinist' some years ago, I made the cube at that time but never completed the final cut that would separate the rings, picture attached.
Emgee

 

[velocette]

Hi
A copy of an xls file for calculations of a "Turners Cube"
Stored but not tested

Eric

View attachment TurnersCubes.xls

 

[Cogsy]

Great - I showed the video to my wife and kids and now I have orders for birthday presents . I hope they're as easy to make as he makes it seem...

P.S. In the comments for this video on Youtube there is a link to the dimensions he used HERE

 

[Davewild]

https://www.youtube.com/watch?v=AuS6HDHc7XE

Has anyone here made this before? if so where would i find the meaurements.

Very good video, he makes it look very easy.

Sherline do a kit for this, i cant remember but i think it just a brass cube and the cutter.

 

[RonGinger]

I think the interesting idea in this video is using hot melt glue to hold it together for the final cuts. In the plans Ive seen in the past you had to make turned plugs to fit into each side. The hot melt would be much simpler to do, if it holds well enough. One of the low temp metals would also work well.

The ring as a collet is also a nice idea- it makes resetting the block for each face simpler- doing that job in a 4 jaw would be nasty.

It is an exercise in accuracy- slight errors will show up in the end.

 

[abernat]

One of Guy Lautard's Bedside Readers discusses Turner's Cubes in detail including how to calculate the various undercuts, how to build a fixture to hold the cubes in a lathe, etc.

I've turned a number based on his suggestions.

The books are great for any number of reasons.

 

[Buchanan]

They are great fun to make and you can test your skills and the limits of the materials to the limit. I have turned many on lathe over the years but now make them on a small CNC mill with two cutters and 3 G codes to produce 4 blocks in a 65mm square wood block. It is simple enough to draw out on paper in cross section add take your dimensions off the drawing especially if you draw it 5 or 10 times oversize.

 

[AussieJimG]

Article for cubes was in 'Digital Machinist' some years ago, I made the cube at that time but never completed the final cut that would separate the rings, picture attached.
Emgee

Your cube looks really great - just the thing for a desk toy. I particularly like the spidery form. Do you have the dimensions?

Jim

 

[bazmak]

Hi Jim i have just ordered some material to make one i alum.
If you google turners cubes there is one good INstructional site
mainly general eng and setup but has basics and sizes.Plan to make a simple 3 cube to start 50mm size for a card keep at poker.Will post when done

 

[AussieJimG]

Thanks Baz, after a bit of maths and some "adjusting" on Geomagic I have come up with this for a 24mm cube. I have adjusted the holes to suit my milling cutters and will try to make it on the mill. I intend to leave it intact like xpylonracer's example.

It remains to be seen if I have the patience, concentration span and skills to make it.

Jim

 

[bazmak]

I read this thread with interest,and as Tin Falcon says there will be lots made
I knew of them but nothing about the manufacture so read a good instructional
post on google so decided to make one.Fairly straightforward but the next one
should be better.Photos tell the story

 

[AussieJimG]

Well done Baz. And of course you would chamfer the inner cubes just so the rest of us have something to think about.

Jim

 

[Herbiev]

Looking superb Baz. Thanks for sharing. Now for a sphere within a sphere :hDe:

 

[BrianS]

They are great fun to make and you can test your skills and the limits of the materials to the limit. I have turned many on lathe over the years but now make them on a small CNC mill with two cutters and 3 G codes to produce 4 blocks in a 65mm square wood block. It is simple enough to draw out on paper in cross section add take your dimensions off the drawing especially if you draw it 5 or 10 times oversize.

If you don't mind me asking what 2 cutters do you use for this? Also, how do you do the undercuts?

 

[bazmak]

I ground a piece of 6mm sq hss as a std tool and used it pointed
towards the head just as a boring bar cuts.Set the carriage lock as a depth
stop and wound the cross slide towards the operator to dial Quick and easfor allturning.I used a boring bar to cut the ucut to cut the face flush with the back
edge forming a chamfer.I am currently making another slightly different
and thinking of making a dedicated ucut tool. Will post when finished

 

[canadianhorsepower]

ck
.I am currently making another slightly different
and thinking of making a dedicated ucut tool. Will post when finished

Nice work Thm:
but would a woodruff key cutter work for the under cut

cheers
Luc