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Chimneys - On Members Workbenches. - More Practical Help - Your Model Railway Club
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 Posted: Sun Jul 3rd, 2011 11:00 pm
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Black5
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I started to construct the chimney's for the Dairy.
They are made from 3mil MDF and laser cut sprayed with red auto touch up paint, they need weathering:











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 Posted: Mon Jul 4th, 2011 02:40 am
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Sol
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VG  Warren

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 Posted: Mon Jul 4th, 2011 05:02 am
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MaxSouthOz
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Very  neat.  :thumbs



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 Posted: Mon Jul 4th, 2011 05:38 pm
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Petermac
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They look like just the business Warren - sizeable chimneys for a sizeable factory. :thumbs



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 Posted: Tue Jul 5th, 2011 07:40 am
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Perry
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They look really good. :thumbs

I have a question: Not knowing much (if fact, knowing nothing) about laser cutters, I was wondering if it's possible to bevel-cut (mitre) the 'long edges' of the main parts of the chimneys (or any other structure, for that matter) to do away with the need to make an overlapped butt-joint? With the accuracy a laser cutter provides, a mitred joint would perhaps provide the ultimate in final appearance.

This is not in any way a criticism of your work, merely a 'technical feasibility' question.

Perry



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 Posted: Tue Jul 5th, 2011 10:43 am
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Petermac
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Like you Perry, I know very little about laser cutters - in fact, probably far less than you do.

Is it the laser that actually does the cutting (in which case, why doesn't it burn ?) or is it the laser that guides the blades that actually cut ?

If the latter, then I'm not sure what sort of blade I'd use for cutting MDF - it's pretty tough stuff but the idea of having bevelled edges on a sheet that thick would appeal to me as well. :hmm



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 Posted: Tue Jul 5th, 2011 12:29 pm
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MaxSouthOz
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You could always ask Darth Vader.  Now there's a guy with a serious laser cutter.  :shock:



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 Posted: Tue Jul 5th, 2011 10:42 pm
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Petermac
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Is he a new member then Max ? :mutley:mutley:mutley



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 Posted: Tue Jul 5th, 2011 10:50 pm
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MaxSouthOz
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:mutley



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 Posted: Wed Jul 6th, 2011 12:34 am
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Black5
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Perry.

My friends laser cutter can Raster (Score) many depths and can be set to cut, It can cut HO bricks on a board/card/ceramic and many more items.
It doesn't burn the wood but a tiny scorching will occur.
The machine Matt has ($35K) won't do bevels he would need something in the order of $100K machine to do that.
We beveled the edges on a Linisher (sp) but you have to go gentle as it will pull off the brick work on the edges.

This is his site so you can get a better understanding on what he does.

http://modelsnmore.com.au/

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 Posted: Wed Jul 6th, 2011 01:45 am
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MaxSouthOz
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It looks like a very professional operation, Warren.  Good Luck to him.  :thumbs



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 Posted: Wed Jul 6th, 2011 07:51 am
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Perry
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Black5 wrote: ...........The machine Matt has ($35K) won't do bevels he would need something in the order of $100K machine to do that................

:shock::shock::shock: In that case, I don't think I would be too inclined to worry about bevels!

Thanks for the explanation.

Perry



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