Homebrew PCBs

Jan:

You stated that it is possible to salvage broken carbide drills by grinding an "engraver's tip" on the broken end and that this new tool could be used for PCB machining. If possible, can you provide details that will describe this procedure? 

I have been using these HF carbide drills for 3-4 years with no problems in a T-Tech machine. I have a 9x20 metal lathe and a small diamond wheel.

Al Daniel


[Non-text portions of this message have been removed]

there is a good description of sharpening engraving cutters in the navy
Machinery Repairman manuals available in the files section of this group
over here
http://groups.yahoo.com/group/kmbsgroup/
takes a steady hand to do it without a fixture :)

Brian
-- 
"Nemo me impune lacesset"

On Monday 13 January 2003 07:23 am, Dantrol wrote:
> Jan:
>
> You stated that it is possible to salvage broken carbide drills by grinding
> an "engraver's tip" on the broken end and that this new tool could be used
> for PCB machining. If possible, can you provide details that will describe
> this procedure?

Hi Daniel,

Can you offer any review of the T-Tech macnhine ?

I just got one and unloaded it from the car.

I'm excited, but have no idea where to start other than start reading 
the manual.

any tips would be GREATLY  appreciated.

Dave




--- In Homebrew_PCBs@yahoogroups.com, "Dantrol" <dantrol@o...> wrote:
> Jan:
> 
> You stated that it is possible to salvage broken carbide drills by 
grinding an "engraver's tip" on the broken end and that this new tool 
could be used for PCB machining. If possible, can you provide details 
that will describe this procedure? 
> 
> I have been using these HF carbide drills for 3-4 years with no 
problems in a T-Tech machine. I have a 9x20 metal lathe and a small 
diamond wheel.

> 
> Al Daniel
> 
> 
> [Non-text portions of this message have been removed]

In a message dated 1/13/2003 9:24:07 AM Central Standard Time, 
dantrol@... writes:


> grinding an "engraver's tip" on the broken end and that this new tool could 
> be used for PCB machining. If possible, can you provide details that will 
> describe this procedure? 
> 

 Check this other "member's" input on this:


there is a good description of sharpening engraving cutters in the navy 
Machinery Repairman manuals available in the files section of this group over 
here     http://groups.yahoo.com/group/kmbsgroup/
     takes a steady hand to do it without a fixture :)                        
 Brian




[Non-text portions of this message have been removed]

Hi Jan,

I picked up the T-tech unit today and a bunch of bits.

even a dozen 1/16 router bits that are designed to cut the board for 
isolation or just cutout the board.

Dave



--- In Homebrew_PCBs@yahoogroups.com, JanRwl@A... wrote:
> In a message dated 1/13/2003 9:24:07 AM Central Standard Time, 
> dantrol@o... writes:
> 
> 
> > grinding an "engraver's tip" on the broken end and that this new 
tool could 
> > be used for PCB machining. If possible, can you provide details 
that will 
> > describe this procedure? 
> > 
> 
>  Check this other "member's" input on this:
> 
> 
> there is a good description of sharpening engraving cutters in the 
navy 
> Machinery Repairman manuals available in the files section of this 
group over 
> here     http://groups.yahoo.com/group/kmbsgroup/
>      takes a steady hand to do it without a 
fixture :)                        

>  Brian
> 
> 
> 
> 
> [Non-text portions of this message have been removed]