Here's another tip:
Even thoug speed is important...high speed is not. Obviously the faster one can go the faster the damage will be removed. To a point...first, speed is heat and heat is bad...too much heat will pop a tempered glass is a hrry. But too little speed will cause too much work.
The right speed depends on the materila of the pad...felt, cotton, wooden bob etc....and the solution used for polishing/grinding.
If the "paste" slings out from under the pad...you will be using more paste more often to replace the paste you slung out, you will make a bigger mess and you wont get the damage out.
RPM's matter...but so do IPM (inch per minute) that refers to how fast the part of the pad that is touching the glass is going.
If the pad is three inches spining at 2000 RPM and you are using the very outside edge of the pady...the actual speed is how fast THAT portion of the pads is going...IPM. Outside of circles are fast than inside of circles...RPM is measuring the inside...the ortation...not the speed.
So, in order to learn your speed keep two things in mind:
Do NOT go so fast your paste slings out too fast
Go fast enough to cause the paste the begin to dry in less then four seconds...
do no soak the pad or glass with water....spritz it...do not soak a heated glass with cool water over and over...you'll pop the glass.
Just enough, often enough to keep the glass "cool"...the glass is going to get hot...but not so hot you cant touch it...hot enouogh you will KNOW you touched it...but you dont want to water to steam off...
hope this helps.
some one please remove the sad face fron this thread...