Post by jamesp on Aug 28, 2018 5:22:05 GMT -5
I saw large glass bricks constantly. Two bricks at a time 6" x 2", so a mouthful of glass at 6" x 4". Bricks 9 inches long.
Set feed on speed #2, slowest feed of 6 different speeds.
Glass dulls the saw blade just like agates do, regular dressing required.
considering dressing with SIC grinding wheels instead of aluminum oxide.
Saw is filled with water. All moving parts are sprayed down with cooking PAM aerosol every brick set sawn.
Tried 6-7 aerosol lubricants, PAM way out did the all of them. Sticks like no tomorrow in the water spray.
Saw is also pressure washed clean with #3 tip using a pressure washer after every brick set.
Drained after every brick set with fresh well water to avoid ph rise from soda lime glass.
Barely used MK 303S 18 inch blade got perfectly/symmetrically cupped when sawing big coral heads unknowingly with cocked carriage a while back.
After several iterations adjusting the main blade arbor the blade is sawing OK but am getting some scrubbing against the clamped brick on the vice side of the saw blade.
The scrubbing is necessary, if the cup-in-blade is averaged into the kerf it breaks the slabs about half way thru the cut. bummer
Could reverse saw blade but think that it will then snap slabs off too.
Blade runs dead true. No wobble, just cupped 3/64ths of an inch. grrr
Scrubbing drags motor down a bit. Forces reduced feed rate. grrrr
Considering a faster cutting granite blade with coarser diamonds than the lapidary blade.
Lapidary blades have finer grit diamonds for cutting super hard agates and designed for slow feed rate.
Finish off cut is of no importance. Scratches totally acceptable.
Question: Has anyone ever retrofitted a 18 to 24 inch rock saw with a high speed granite or concrete blade ?
Set feed on speed #2, slowest feed of 6 different speeds.
Glass dulls the saw blade just like agates do, regular dressing required.
considering dressing with SIC grinding wheels instead of aluminum oxide.
Saw is filled with water. All moving parts are sprayed down with cooking PAM aerosol every brick set sawn.
Tried 6-7 aerosol lubricants, PAM way out did the all of them. Sticks like no tomorrow in the water spray.
Saw is also pressure washed clean with #3 tip using a pressure washer after every brick set.
Drained after every brick set with fresh well water to avoid ph rise from soda lime glass.
Barely used MK 303S 18 inch blade got perfectly/symmetrically cupped when sawing big coral heads unknowingly with cocked carriage a while back.
After several iterations adjusting the main blade arbor the blade is sawing OK but am getting some scrubbing against the clamped brick on the vice side of the saw blade.
The scrubbing is necessary, if the cup-in-blade is averaged into the kerf it breaks the slabs about half way thru the cut. bummer
Could reverse saw blade but think that it will then snap slabs off too.
Blade runs dead true. No wobble, just cupped 3/64ths of an inch. grrr
Scrubbing drags motor down a bit. Forces reduced feed rate. grrrr
Considering a faster cutting granite blade with coarser diamonds than the lapidary blade.
Lapidary blades have finer grit diamonds for cutting super hard agates and designed for slow feed rate.
Finish off cut is of no importance. Scratches totally acceptable.
Question: Has anyone ever retrofitted a 18 to 24 inch rock saw with a high speed granite or concrete blade ?
