¿ªÔÆÌåÓý

Re: Fw: [projects-in-metal] A $5 2 axis DRO for a small drill press


 

Herman,

Beautiful work. Thanks for the comment about using a center drill for the initial hole. They are *much* stiffer. The only real issue is there is very little daylight between the table and the chuck. So a selection of screw machine length drills will probably be required. Though I could switch to a regular drill press once the holes were spotted. Holes I can hit. Can't do punch marks any longer.

As for how to extend the range there is the possibility that someone makes a plastic 8" or 12" caliper though I have not seen one. Extending the range merely requires drilling and tapping a 3rd hole in the table and a knurled screw to make it easy to move. Just rezero the caliper after a move.

I have a 6" x 24" Clausing 8520 mill i can use for larger work. But as my interest is small DIY T&M or QRP projects, the caliper length really isn't a limitation.

I bought the plastic calipers for the sole reason they were crazy cheap and likely quite accurate. Coming from temu, if they were not, once they hit my B&S Johansson gauge block set they would have been a full refund from temu. They were dead on.

Have Fun!
Reg


On Saturday, January 13, 2024 at 10:11:27 AM CST, Herman van Rees via groups.io <herman@...> wrote:


Hi Reg,

That is my favorite manner of drilling.

Centering with a punch & hammer is very difficult te be spot-on.

I use the X-Y coordinate system, calculate the positions and start with the X & Y display on 0 at the corner of the front panel.
The results is perfect, first drilling with a center drill as used on my lathe.
See picture and final result on QRZ.com on my webpage there.

w. greetings,
Herman,
PA0VRE

Join [email protected] to automatically receive all group messages.