[chbot] 50-70mm diameter disks

[Andrew Errington]

You could try wandering around aimlessly in Bunnings, Mitre 10 or Spotlight
(craft store) in case something jumps out at you that could be adapted, but
maybe a small Python script that produces an SVG file including the slots
and holes would be better.

Send the file to a laser cutter loaded with corrugated card to check the
dimensions (cheap material), then finalise it with 5mm ABS, or whatever you
prefer, once you know it's going to work.  Or print onto A4 and glue to
cardboard then cut with a craft knife.

I have some Python primitives for producing SVG if you are interested.

A

On Thursday, 27 November 2014, Spencer Travers <spencer.travers at gmail.com>
wrote:

> If a centre hole is acceptable then you could use a hole saw. I have had
> good results cutting ABS. I used a good quality arbor and saw with 3
> cutting teeth, not the ones with serrations.
>
> Spencer
> On 27 Nov 2014 14:34, "Winston Wealleans" <winstonhw at clear.net.nz
> <javascript:_e(%7B%7D,'cvml','winstonhw at clear.net.nz');>> wrote:
>
>> At 01:46 p.m. 27/11/2014, you wrote:
>>
>>> I am looking for disks about 50-70mm dia, 5-15mm thick, and about 100
>>> of them...  I need a notch and 2 holes in them too, but that's easily
>>> taken care of.
>>>
>>> The straightforward option would be to slice up a 50mm dia wooden pole
>>> or dowel, but plastic would be better because of the lower weight.
>>> Perhaps something like a tooth wheel from a mechanical toy set. The
>>> teeth on the disk would not be a problem.
>>>
>>> Getting it laser cut is likely not cheap enough, and solid plastic
>>> probably weighs more than pine too.
>>>
>>
>> Give Carl Pavletich  at 21 388 245 a call.
>> http://www.fablabxchc.org.nz/welcome/
>> they have a big nice new laser cutter that will handle MDF, cardboard,
>> fabrics and all sorts of plastics
>>
>> Stress that you are a tinkerer and Robotics Group member.
>>
>>
>>  Has anyone come across something suitable that might be put to use with
>>> a bit of drilling and hacksawing?
>>>
>>> Thanks muchly,
>>>
>>> Volker
>>>
>>
>>
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