Author Topic: Inside out turning  (Read 8968 times)

Offline slowcoach

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Inside out turning
« on: May 02, 2011, 12:41:49 PM »
Hi all, thought I would have a go at posting a thread, please bear with me, I'm not too good at juggling my camera whilst making something  :zap:

Right, I thought I would have a go at a bit of inside out turning. The idea is you turn a fancy shape on the outside then turn it inside out and then turn a fancy shape on the new outside. So basically when your done you have a piece that you can look into and see a fancy machined surface that would be normally impossible to machine from solid   :scratch: It will all soon become clear, I hope  :lol:

Anyway this is my attempt  :ddb:

I started with 4 pieces of 1/4" brass square bar



Then all four pieces are then super glued (along with my fingers ::)) they could soldered together for a bit more security



Once all stuck together I then clocked it up in the 4 jaw chuck



Machined a basic sort of contour on the outside with a radius tool



Out of chuck and in to the thinners to soften the glue, Hey presto four bits



Now turn them inside out and solder together and like magic its whole again  :med:



Back to the lathe and clocked in the good old 4 jaw  ::)



Machining the new outside, nothing too fancy (pretty uninspiring really)



There you have it, a inside out turned piece of brass  :thumbup:













Here's my first attempt, all going well and then I got a bit cocky and .......

crunch  :bang:


Anyway hope you found this thread of some interest. I'm currently building a stationary steam engine, its sort of a commision job for a mate and I fancied a change from the solid supports and decided to go for something a bit different.  :ddb:

Cheers
Rob :thumbup:



Rob.Wilson

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Re: Inside out turning
« Reply #1 on: May 02, 2011, 12:54:25 PM »
Its not April fools again  :scratch:  ,,, i mean Rob slowcoach starting a thread  ::) :lol: :lol: :lol: :lol:


Only joking Rob ,,,,,,,,, about time  :D   ,,,,,,,,,,,, cool idea  :med:


Rob


PS now any chance of traction engine thread   :whip: :poke:  :)



Offline Divided he ad

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Re: Inside out turning
« Reply #2 on: May 02, 2011, 07:27:10 PM »
Now I really like that!   :nrocks: 


See you have the skills and you share them.... How easily you have just made my whole turning life so much better   :thumbup:


I'm going to have to try this someday now. (even if it does involve the 4 jaw!)  The good bit.... I know where to find the write up for reference  :mmr:







Thanks Rob  :clap:





Ralph.
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Offline slowcoach

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Re: Inside out turning
« Reply #3 on: May 03, 2011, 01:48:28 PM »
:lol: :lol: :lol: No April fool this time Rob W :lol: Just testing the water before showing the traction engine screw ups  :lol: :lol:. I'm not too clever with camera's, but I'm getting to grips with this new one, me thinks :scratch:


Cheers Ralph, appreciate the comments  :thumbup:

Cheers
Rob


Offline DaveH

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Re: Inside out turning
« Reply #4 on: May 03, 2011, 02:13:09 PM »
Rob,

I like that; clever and very arty - very nice :thumbup: :thumbup: :thumbup:

DaveH
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Offline Bogstandard

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Re: Inside out turning
« Reply #5 on: May 03, 2011, 03:11:04 PM »
Rob,

What a very unique technique you have there. :clap:

It opens up all sorts of bling ideas, just got to think about where  :scratch: :med: :smart:


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Offline mklotz

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Re: Inside out turning
« Reply #6 on: May 03, 2011, 04:39:46 PM »
I haven't given it any deep thought but someone should examine what's possible with three pieces of hex stock.
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Offline jim

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Re: Inside out turning
« Reply #7 on: May 04, 2011, 11:35:05 AM »
interesting idea.

i'm very impressed at the super glue holding with the centre in. I'd have been putting something around the end to support it.

out of interest, we used to do a job at work that had to "glued" together, when this hugely expensive "glue" was used, it was as strong as a weld!
if i'd thought it through, i'd have never tried it

Offline madjackghengis

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Re: Inside out turning
« Reply #8 on: May 04, 2011, 11:45:47 AM »
Hi Rob, I believe I've seen reference to that technique before and quite forgot it, but it looks like it would make some very nice pillars for an engine, and one could easily make some pretty intricate machine work before turning it inside out, and then do some complementary work after it is reassembled inside out, and have some very interesting looking posts and pillars, with careful soldering, almost invisible as to how it was done.  I am going to have to try it just so I don't forget what you've done us the favor of showing can be done. :bow: :headbang: :beer:  Cheers, Jack

Offline Ned Ludd

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Re: Inside out turning
« Reply #9 on: May 05, 2011, 07:25:50 PM »
Hi Rob,
Interesting indeed, I could never get the sections to line up properly but then I was using wood and as we all know wood warps!
Ned
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Offline slowcoach

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Re: Inside out turning
« Reply #10 on: May 06, 2011, 10:47:18 AM »
Thanks guys, for all the comments. I do hope someone has a go at it. If you do, remember,  :worthless:

Cheers
Rob  :thumbup: