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Been wanting a dedicated setup for HSS lathe bits for some time so I can work on my lathe bit grinding experience.
After reading around the net on the Horror Freight 6" tool grinder and some mods/improvements that can be made to it to make it a decent running unit, I jumped in when it was on sale and a 20% coupon. Youtube has some vids on these mods.
After taking everything apart, I deburred all the trunnion slots and resurfaced them to square on the mill. Their factory castings are not square.
Deburred and stoned the table top and edges, where the mount bolts are pressed into the holes in the table top there are raised edges around there.
Removed paint from where the trunnion faces ride for smoother operation.
Made new steel pins for the shaft keyways on the backing plates. From the factory they use split roll pins that barely stick out of the shaft.
I trued up the ends of both spacer collars that the plates are pressed against.
I then put the plates on the shaft with collars index-marked and mounted the shaft between centers on my lathe with a dog and trued up both sides of both plates, the outer dia, and the 10 degree angle on the plate.
After all this and several hours later, I put everything together and is it SMOOTH now! I am happy for cheap amount paid.
I'd like to buy new Al/Ox wheels for this now, maybe a 45 and 80 grit? I can find the 45 grit, but the 80 seems harder to locate. Some places mention a type 35 wheel for this unit, but others mention a type 2. What is the difference?
And once you have a new Al/Ox wheel, what is the proper way to dress it?
Do you do just the outside edge, or the outer dia also?
After reading around the net on the Horror Freight 6" tool grinder and some mods/improvements that can be made to it to make it a decent running unit, I jumped in when it was on sale and a 20% coupon. Youtube has some vids on these mods.
After taking everything apart, I deburred all the trunnion slots and resurfaced them to square on the mill. Their factory castings are not square.
Deburred and stoned the table top and edges, where the mount bolts are pressed into the holes in the table top there are raised edges around there.
Removed paint from where the trunnion faces ride for smoother operation.
Made new steel pins for the shaft keyways on the backing plates. From the factory they use split roll pins that barely stick out of the shaft.
I trued up the ends of both spacer collars that the plates are pressed against.
I then put the plates on the shaft with collars index-marked and mounted the shaft between centers on my lathe with a dog and trued up both sides of both plates, the outer dia, and the 10 degree angle on the plate.
After all this and several hours later, I put everything together and is it SMOOTH now! I am happy for cheap amount paid.
I'd like to buy new Al/Ox wheels for this now, maybe a 45 and 80 grit? I can find the 45 grit, but the 80 seems harder to locate. Some places mention a type 35 wheel for this unit, but others mention a type 2. What is the difference?
And once you have a new Al/Ox wheel, what is the proper way to dress it?
Do you do just the outside edge, or the outer dia also?
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