Deep hole drilling, Haas mill?

[Matthew Hajicek - Singularity]

I have some .067" holes to drill 1.75" deep.  I interpolated some .05" deep starting bores, then used a short cobalt drill to peck .875" deep.  Now I want to use the long cobalt drill to peck the rest of the way, retracting above the stock with each peck and between holes, but not redrilling the first .875" of depth.  What's the best way to do this?

I tried this but it wants to start pecking at the top of the hole:

T39 M06 (#51 .067 COBALT DRILL)
T4
G59 G17 G90
G00 A0. B0.
M88
G01 G94 X.0984 Y0. S1255 M03 F833.
G43 H39 Z4.3465
G99 G83 Z3.3715 R5.2215 Q.025 F.05

Thanks

 

[Matthew Hajicek - Singularity]

Trying this:

G99 G83 Z3.3715 I.875 J.85 K.025 R5.2215 F.05

It's better, but still feeding slow into the hole.  Might have to go longhand.

[crazy^millman]

40 minutes ago, Matthew Hajicek - Conventus said:

Trying this:

G99 G83 Z3.3715 I.875 J.85 K.025 R5.2215 F.05

It's better, but still feeding slow into the hole.  Might have to go longhand.

Try G98 and see if that does better. Set the Z height before the move to the move where you want and see if that is more like what your looking for.

[jeff]

Do you have 2021? The Advance Drill toolpath might do this.

[Matthew Hajicek - Singularity]

3 hours ago, jeff said:

Do you have 2021? The Advance Drill toolpath might do this.

Have it but not using it.  I'll poke around, thanks.