[chbot] Progress with Full Micromouse Maze

Michael Pearce chchrobotics@lists.linuxnut.co.nz
Thu, 23 Aug 2007 23:22:43 +1200


What about using M4 Machine screws (or possibly studs) and removing the heads.
Already to length and the thread shouldnt really matter to much.

Also pretty cheap in bulk - I have an account if you need to buy bulk.

Will have to check up on the threaded studs... may also be possible to
get dowels.. will look up my catalog when I get into the office... may
need reminding.

Mike



On 8/23/07, Richard Jones <rjtp@ihug.co.nz> wrote:
> This evening I cut four sheets of 1.2x2.4m MDF into four micromouse maze
> floor panels 930x1980mm and used the offcuts to make walls, about 125 or
> so. I just have to cut a square for the maze centre and do a few more walls
> and the large scale work will be complete. Then there will be lots of
> drilling and painting, and still the 600 wall pins to make. I already have
> a jig somewhere to position the holes in the maze walls for the pins. The
> floor panels will mate together with metal dowels to ensure a snug level
> fit.
>
> Now I'm considering the design of a jig to ease the cutting of the wall
> pins. Probably using a metal cutting disc in an electric mitre saw, with a
> jig to hold the wire in place and provide the cutting dimension. I'm still
> on the look out for metal rod. Goldpine sell 4mm fence wire, about 250m is
> $72, they didn't seem keen to sell me 16m.
>
> More news next week.
>
> Richard
>
>
> On Fri, 17 Aug 2007 11:13:51 +1200, Richard Jones <rjtp@ihug.co.nz> wrote:
> > I want to build a complete micromouse maze, which according to my
> simulator
> > has about 280 or so walls, but I'm having trouble getting hold of mild
> > steel rod or wire to make the pins. I've enrolled at woodwork classes and
> > can make the walls and base out of mdf for about $100NZ :-)
> > I made a small sample maze shown in this picture:
> >
> http://groups.msn.com/chchrobotics/micromouse.msnw?action=ShowPhoto&PhotoID=4
> > I bought the
> >
> bithttps://webmail.ihug.co.nz/webmail/?_task=mail&_action=compose&_reply_uid=558&_mbox=INBOX#s
> > in the UK 10 years back. The steel pins are 25mm long and 3.93mm dia
> > according to my very near calipers.
> > My guess is that this is an imperial size 5/32 inch.
> >
> > So far I've tried Mico Metals, they only supply Aluminium or stainless.
> > The Steel and Tube catalog seems to start at 6mm.
> > Ideally I'll buy the same size as my existing walls, but I might be able
> > adapt the old walls and bases to a new size.
> > If I get really desperate I'll try Bunnings for 4mm nails.
> > In total I'll need about 16 metres of rod to make 600 pins of 25mm.
> > Once I've obtained the rod I've located a metal guilotine (next door to
> > the
> > woodwork class) that should make quick work of the slicing to 25mm once
> > I've put a guide fence on it to get the dimension roughly repeatable.
> > One suggestion that I've looked at is no8 wire. I can get this free from
> a
> > friend, but its a little corroded and measures about 4.4mm.
> >
> > Any thoughts or suggestions?
> >
> > Richard Jones
> >
> >
> >
> >
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>
>
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Electronics Design
Concept to Production
http://www.kiwacan.co.nz