Hi all !
Now this is just a concept to provoke some thought. What about an
open-frame machine?
Say we make a wide railway line of chain on a large concrete floor -
bolted down to the floor like (maybe raised 100mm or so on steel
stand-offs). Then we construct a trolley style gantry the
]
Sent: den 18 mars 2009 19:22
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] BIG CNC machine for making small airplane?
Hi all !
Now this is just a concept to provoke some thought. What about an
open-frame machine?
Say we make a wide railway line of chain on a large concrete floor
Hello all!
Here are some thoughts:
Precision
Actually airplanes are a big like boats, not very precise. Consider a bunch
of aluminum panels put together by hand with rivets, or wood spars with
cloth covering. I fly two different Cessna 172s and they are supposed to be
identical but have
How would you hollow out the fuselage if you cut it out of one block of foam?
On Tue, Mar 17, 2009 at 6:13 AM, Peter Braroe
peter.bra...@newsmachine.com wrote:
Hello all!
Here are some thoughts:
Precision
Actually airplanes are a big like boats, not very precise. Consider a bunch
of
I don't want to be negative because I like when people try out new ideas,
but...
The rules are very clear, wings must have a tested beam and cross sections
to be certified. Foam is for surfboards.
Not even the lighest gliders are built with any type of foam. Beams and
sections. Always.
But it
@lists.sourceforge.net
Sent: Tuesday, March 17, 2009 7:13 AM
Subject: [Emc-users] BIG CNC machine for making small airplane?
Hello all!
Here are some thoughts:
Precision
Actually airplanes are a big like boats, not very precise. Consider a
bunch
of aluminum panels put together by hand with rivets
Peter Braroe peter.bra...@... writes:
snip...
Actually airplanes are a big like boats, not very precise... and I would be
very surprised if they had
millimeter precision!
snip...
wouldn't it be nice to just put a big
block up and have instant airplane! Just add the skin.
Has anyone
Burt Rutan figured this out in the 70's. with the Varieze and LongEze's.
Tapered airfoils with twist can be made by running hot wires along numbered
templates.
CNC your templates then hotwire the wings in 4 foot sections.
This will probably be too heavy a method for Sport Category craft.
Scaled
On Tuesday 17 March 2009 04:13, Peter Braroe wrote:
The main thing I am thinking about is how to make something work over such a
long distance as 6 meters. Perhaps a linear motor and a bicycle chain(s)
with a tensioner could be used for the long axis? Those parts are plentiful!
How to make an
Tom kestrel...@... writes:
snip
OK... I am going to step in here at this point and say Whoa pardner!
Yes, you can be a millimeter off in some areas with very little penalty, but
in
other respects a millimeter difference can defeat your ability to get off the
ground ... or another
and
measure any major dimension on a Cessna, if its within 2 its within spec.
Greg
- Original Message -
From: Roger vrsculp...@hotmail.com
To: emc-users@lists.sourceforge.net
Sent: Tuesday, March 17, 2009 8:32 PM
Subject: Re: [Emc-users] BIG CNC machine for making small airplane?
Tom
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