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(Topic ID: 160114)

Drilling holes in NOS butyrate ramps


By mavantix

4 years ago



Topic Stats

  • 7 posts
  • 6 Pinsiders participating
  • Latest reply 4 years ago by PNBLWZD
  • Topic is favorited by 1 Pinsider

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    #1 4 years ago

    Have a 20+ year old NOS ramp that needs a few more holes in it, some of the mounting holes are missing for some reason. I'm a bit terrified of destroying it, figure it's probably more brittle than it was 20 years ago. What's the proper way to drill it out without cracking it? I really don't want to destroy a new $90 ramp. Was thinking drill press, sharp metal working drill bit, and backer block of wood? Any suggestions or tips welcome, thanks!

    #2 4 years ago

    Well I have never attempted what you are doing however I can say that drill slow (like do not push on the drill much) and have a backer block of wood, that is essential.

    #3 4 years ago

    Use a "brad point" drill bit - there will be less potential for chipping due to the "wings" on the outer edges of the bit.

    #4 4 years ago

    Search "tap plastics" for drill bits for plastic, the cutting edge is at a much steeper angle, (60 degrees).

    #5 4 years ago
    Quoted from Out-West:

    Search "tap plastics" for drill bits for plastic, the cutting edge is at a much steeper angle, (60 degrees).

    Awesome, and they even have a handy 'how to drill plastics' PDF on the bits page. Thank you very much!

    #6 4 years ago

    You could always burn the hole thru by heating a drill bit with a propane torch then just push it slowly thru, then you can clean the hole with a chamfer tool.

    #7 4 years ago

    Do a search for drill reamer, they are used for drilling holes in composite materials. Safer for the material being worked and makes a much cleaner rounder hole

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