Importance of drilling pressure in using core bit drill?

As the title of this post suggest, drilling pressure is very important drilling concretes since:

1 – It will help your drilling project run smoothly.

2 – It will prolong the life of your core bit and the drilling machines.

3 – It will give you best results of drilling and may avoid concrete or masonry breakage if unlikely pressure may occur.

So what’s the exact pressure to be applied in drilling and what are the tips?
So here’s my tips, when using normal drill bits on soft materials such as wood, increasing the pressure causes the bit to drill faster and has little affect upon friction or heat build-up on the bit. When drilling in harder materials such as hardwoods, it is more important to reduce the pressure and let the bit "drill at its own speed".

Otherwise, friction will quickly burn up the bit. When using diamond drill bits, the affect is similar to hardwood drilling, but it is magnified many times due to the extreme hardness and abrasiveness of the material being drilled.

When using diamond drills on glass, ceramic or porcelain tile, limestone, marble and granite, etc, it is very important to have only light to medium pressure on the drill and to let the bit "drill at its own speed". Increasing pressure will not speed up the cutting noticeably, but it will increase the friction considerably and quickly cause the bit to overheat. This not only burns up the bit, but it also heats up the surrounding surface and can cause heat fractures or breakage to occur.