[sdiy] Making holes in plastic

[Simon Brouwer]

Hi Fish,

At 18:37 15-10-2005, Fiercefish wrote:
>I have a project where I need to make some very neat holes in a plastic 
>enclosure, drilling is not an option due to the size of the holes (about 
>12mm/ half inch) and I don't have a drill press, also the placement of the 
>holes needs to be very accurate. Which would be a good method?
>I was thinking of those devices that go each side of the material and are 
>pulled together by means of tightening a bolt, drawing the two parts 
>together, but I can't remember what they are called nor where I have seen 
>them. Any other suggestions or tips welcomed!

You could drill a smaller hole and neatly finish it using a round file (in 
Dutch these are called rattenstaart, or "rat's tail").

Also you could use a conical drill or a stepped drill, see e.g.
http://www.amazon.com/exec/obidos/tg/detail/-/B00004THZ0/103-8536722-3115006?v=glance


Vriendelijke groet,
Simon Brouwer.

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