bdahl385
You asked when TD is expected.
Sometimes slower is better.
Think of it like drilling a hole
Into something of great hardness
And thickness,something like...
A Bank's Safe (hehe)
Using your benchtop cordless drill.
You know that if you start out
Very slow with a small drill bit
To establish a guide hole,
Then switch to the next larger drill bit size,
You can accelerate
The drill speed for a time,
Till the drill bit gets hot.
Then you pull the drill bit out,
Allow the drill bit to cool,
Clean out the hole,
Circulate a little lubricant
Into the hole
For slickness
And to help the cuttings evacuate the hole.
Then start again.
If the hole starts to deviate,
You need to pull out,clean out,
Adjust the angle of penetration,
Then resume drilling.
Very time consuming indeed
But in the end,
Having employed experience,planning,and patience
You will achieve your objective to your complete satisfaction!