Subject:
|
Re: Some brainstorming needed.
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Tue, 16 Mar 2004 08:00:20 GMT
|
Original-From:
|
SIVA Frédéric <frederic.siva@swift.com*antispam*>
|
Viewed:
|
1002 times
|
| |
|
|
what about putting the Dremel tool at the end of a lego motor ? To cut thin Balsa, it should be strong enough.
If the Dremel power is necessary, then you can have it fixed upwards on a table, and have the lego plotter to move the Balsa plate onto it
!
To assemble the layers, I would simply have two central axles on which all layers would be stacked. Those should of course be put at a
place you will not need to cut !
F.
Steve Baker wrote:
> SIVA Frédéric wrote:
> > Don't know how to post on lugnet, so here is a bare mail ...
>
> You can email directly to: lego-robotics@crynwr.com
>
> > Why not having a pile of 1mm plastic sheets, and a kind of 2D plotter that would have a dremmel at the end i.o. a pencil.
> > This plotter would take one layer, and cut out what's required, then place it on top of the previous.
>
> Yes - I had thought about something like that. I was thinking in terms of sheets of thin balsa wood - which could
> probably be cut with the kind of power I could get from a Lego motor. Building a machine to move something as
> heavy as a Dremmel (accurately!) seems like a hard problem for a Lego solution.
>
> Also, I was remembering the machine that uses layers of paper - cutting it with a laser. It seems like I could
> perhaps do that using a sharp scalpel blade in a swivel mount. There are machines that cut vinyl sheets that
> way to make lettering for vehicle and store signs. Many print shops have them.
>
> > To start with, you could even manuall feed the plastic sheets in the plotter, and take them away when finished. Ultimately, you can
> > build a lego feeder.
>
> The problem I have is how those layers get stuck together. The machine that uses paper layers had a roll
> of self-adhesive paper with a backing sheet. As it unrolled the paper, it peeled off the backing sheet
> leaving a sticky underside that it rolled onto the stack of sheets that it had already cut.
>
> One problem is that to build up an object of reasonable size (say 6 inches on a side?), you need hundreds
> of layers - and that sticky-backed paper is EXPENSIVE! I thought about using layers of scotch tape - or
> maybe duct-tape.
>
> > I think even I could do that (one of my first creation was a scanner/plotter, which is not that far
> > from what I suggest here ...)
>
> Right - I've seen several plotters made using Lego - and that's what gives me hope that I could at least
> draw the design on each layer with reasonable precision.
>
> The hard part is figuring out what kind of material to make the layers out of, how to stick them together and
> how to cut them.
>
> Another thought I had this morning was to use a hot glue gun with a finer nozzle to deposit little blobs
> of plastic and build up the object one tiny blob at a time that way.
>
> ---------------------------- Steve Baker -------------------------
> HomeEmail: <sjbaker1@airmail.net> WorkEmail: <sjbaker@link.com>
> HomePage : http://www.sjbaker.org
> Projects : http://plib.sf.net http://tuxaqfh.sf.net
> http://tuxkart.sf.net http://prettypoly.sf.net
> -----BEGIN GEEK CODE BLOCK-----
> GCS d-- s:+ a+ C++++$ UL+++$ P--- L++++$ E--- W+++ N o+ K? w--- !O M-
> V-- PS++ PE- Y-- PGP-- t+ 5 X R+++ tv b++ DI++ D G+ e++ h--(-) r+++ y++++
> -----END GEEK CODE BLOCK-----
--
Frédéric SIVA
ITOPS/Business Solutions/Treasury Applications
Tel: + 32 2 655 4094
S.W.I.F.T. s.c.r.l.
This e-mail and any attachments thereto may contain information that is confidential
and/or proprietary and is intended for the sole use of the recipient(s) named above.
It is not intended to create or affect any contractual arrangements between the parties.
If you have received this e-mail by mistake, please notify the sender and delete it immediately.
Thank you for your co-operation.
|
|
Message is in Reply To:
 | | Re: Some brainstorming needed.
|
| (...) You can email directly to: lego-robotics@crynwr.com (...) Yes - I had thought about something like that. I was thinking in terms of sheets of thin balsa wood - which could probably be cut with the kind of power I could get from a Lego motor. (...) (21 years ago, 12-Mar-04, to lugnet.robotics)
|
17 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
Active threads in Robotics
|
|
|
|
|
|
