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Author Topic: cutting button hole in HS-5 CP with plexi  (Read 986 times)

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bimm25e

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cutting button hole in HS-5 CP with plexi
« on: December 30, 2013, 05:19:19 pm »
So I got the best Christmas present ever - a dremel - and its finally time to mount my "enter" "esc" ps/2 keyboard buttons on the Control Panel.


I was thinking trace the inside of a button screw back with sharpie and then taking one of the grinding bits and going slowly at it until the sharpie is all gone. 

BUT am I making a foolhardy mistake? I don't want to damage the CPO or plexi or metal (damage that will show outside of the button's bezel)

Also I know that this is metal and plastic not wood but I figured this was the forum to post in.


Planning on using bit# 84922
http://mdm.boschwebservices.com/files/r19840v15.jpg
before I jump in, anyone have any cautionary tales? I know the dremel is going to act differently when I get to the metal on the cut-corner CP.
« Last Edit: December 30, 2013, 05:35:03 pm by bimm25e »

jmike

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Re: cutting button hole in HS-5 CP with plexi
« Reply #1 on: December 31, 2013, 09:29:06 am »
I'm not 100% sure that you could use that dremel bit on plexi, applying too much pressure could easily crack the plexi.
Why not try to cut the hole on a piece of scrap plexi and metal first?

 :dunno


Good luck.

bimm25e

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Re: cutting button hole in HS-5 CP with plexi
« Reply #2 on: December 31, 2013, 09:51:40 am »
I jumped in and has good results but it took a looonnnggggg time to get the hole cut.

I cut the plexi with the grinding tool at about 10,000rpm - the plexi melted out of the way quite easily.


Once I had cleared the plexi I drilled a starter hole in the metal with a  drill bit and went to the sanding tool (the black rubber that holds the circular sandpaper.  It took a bit and I was shooting sparks (wear eye protection) but at 15,000 rpms and a few "dremel cooldown" breaks I got the button hole cut perfectly.

kahlid74

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Re: cutting button hole in HS-5 CP with plexi
« Reply #3 on: January 02, 2014, 10:29:36 pm »
That seems like a really complicated way to do it.  Selfie has a great stickied post about "shaving" plastic.  This can be accomplished with a forstner or spade drill bit at low RPM on the plexi.  As for the metal, if your CP has metal, then a large grinding wheel would accomplish what you're looking to do if you don't want to spend a fortune on a cobalt drill bit that is 1 and 1/8".

BAMBOO

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Re: cutting button hole in HS-5 CP with plexi
« Reply #4 on: January 07, 2014, 03:08:59 pm »
My plexi always melted when I used a dremel.   :banghead:
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Malenko

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Re: cutting button hole in HS-5 CP with plexi
« Reply #5 on: January 09, 2014, 11:17:01 am »
Ive had no issues dremeling plexi.  I would have drilled or punched the hole in the metal first, then dremeled the plexi.
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kahlid74

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Re: cutting button hole in HS-5 CP with plexi
« Reply #6 on: January 09, 2014, 12:44:34 pm »
My plexi always melted when I used a dremel.   :banghead:

Read Selfie's thread on plastic, it explains why it's melting.

bimm25e

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Re: cutting button hole in HS-5 CP with plexi
« Reply #7 on: January 09, 2014, 04:17:24 pm »
it was much more complicated than it would have been with the right tools but you cant shake a stick at the results.  Im more than pleased.