My experience also. I think they are bits that have been worn out drilling holes in PC boards. Better to just buy high speed steel bits in the right size from an industrial supply house. They are cheaper than at a hobby shop.
While a miniature drill press is ideal (I think Micromark and Proxxon have some that are not too expensive) this gizmo works well in a bigger drill press: http://www.sierraamerican.com/accufeeddrilladapter-p-7.html http://www.rex-supply.com/cgi/CGPTLMXI?PAMODE=*WORK&PMTYPE=KWSEARCH&PMLFNO=09_02_005_002&PMRQNO=000000009223880&PMWORD=MICRO%20DRILL%20ADAPTER You put the shank in the drill press chuck and feed the small bit into the work using the ball bearing collar. Charles Weston --- On Thu, 8/18/11, scale S only <[email protected]> wrote: From: scale S only <[email protected]> Subject: Re: {S-Scale List} Re: Seek And Ye Shall Find To: [email protected] Date: Thursday, August 18, 2011, 5:05 PM Hi Andre -- My experience with these drills is that they come with a large (1/8”) shank that tapers to the actual drill size. I once was given about a thousand of them in different sizes and was in the middle of sorting them when the box got dropped. Of the group, only about ten survived, and they were all fairly large (3/32”+). They are VERY brittle. You can not freehand them – both the drill and the work has to be absolutely anchored so that there is no lateral movement possible. Lubricant is probably a must... Have fun! Bill Winans -------------------------------------- Hi Dave: Thanks for the tip on the carbide drill bits. I have a drill press... but I don't know if it will chuck down to .020". I'll have to remember to check that. Andre Ming [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
