Cutting holes in thick uPVC pipe caps
Carl Denk email (remove spam text)
First I would suggest a hole saw, they are inexpensive, don't require a huge drill to drive it, make a fairly neat hole, and are available in 1/16" (1.6 mm) increments.
2nd, a hand held jigsaw with a blade that is thin enough to allow tight radius cuts.
Both of these are very common, if can't buy, rental or borrowing should be a possibility.
No matter which method, drill briefly and allow material and cutter to cool, and if possible a coolant. If the material melts, a rougher hole happens, and possible to seize tool in hole.
3rd, with dremel, use a 1/8" dia. cutter used to cut wood and drywall like Dremel #560, 561, or Rotozip cutters. Here again material needs to be kept cool. A template that the chuck or smooth part of bit rides on will be helpful, these bits like to wander.
If drilling multiple holes in a circle, start with smaller pilot holes, then using progressively larger bits, say start with 1/8" and stop at 1/4". In plastic, if the drill gets near an adjacent hole, it might try to walk into the next hole, then it gets messy.
On 2/10/2011 11:08 PM, Josh Koffman wrote:
> On Thu, Feb 10, 2011 at 10:38 PM, Bob Blick<ftml.net> wrote: bobblick
>> Immerse it in a pail of water to keep it cool and then use your dremel
>> or drill multiple holes in it.
> My machinist often puts certain plastics in the freezer before
> engraving or cutting them.
In reply to: <AANLkTi=OoLpysrmNOJrAS_e=yvyqMCkXmXdGcESh2NNd@mail.gmail.com>
See also: www.piclist.com/techref/index.htm?key=cutting+holes+thick
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