Homebrew PCBs

Alessio,
I use the chuck that is on the link listed below.  This would solve your problem.

 4486 Dremel Chuck 

The Dremel Chuck holds Dremel accessories without using a collet eliminating having to use the wrench and creating quick and easy accessory changes. 

Derward Myrick
  ----- Original Message ----- 
  From: Frank P 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Tuesday, June 15, 2010 1:59 PM
  Subject: [Homebrew_PCBs] Re: About holes


    
  Alessio,
  I think if you change the collet in the dremel to a smaller one (like ones below), it would solve your problem.

  http://www.dremel.com/en-us/AttachmentsAndAccessories/Pages/CategoryProducts.aspx?catid=5&catname=Chucks+%26+Collets

  Frank P.

  <snip>



    



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