surface grinding wheel recommendation hard and soft steel
I wanted to get two wheels for a little 6x12 norton manual surface grinder, one for putting a fine finish on soft steel and the same for hardened steel.
I was thinking of a Carborundum 32AR 60-I or H for the hardened steel and a 60-K for the soft. This is based on nothing more than the 60 seems to be recommended as a finer grit and to use a soft wheel for hard steel etc..... but i don't have a lot of experience in wheel picking so any guidance and recommendations for general purpose wheels is appreciated.
How fine a finish do you need? How much metal do you want to remove?
You might want to try a J wheel which can do either hard or soft if you're not sure what you like.
We would need more specific info to say a whole lot more.
rj, you're right, i guess 'fine' doesn't tell you much does it ok reading up on surface finishes, I don't have much context as to what any particular Ra or grade number looks like.....if i said I'd like to be able to get a finish like what i see on, say, a new Jacobs adapter - does that help? removing small amounts of material, a few thou at most, more likely less than than a thou, just finish grinding,
Its just for toolmaking for myself - no commercial standard i have to adhere to. I can try a couple of grits and see what i can get. How big a difference does wheel hardness make in going from soft to hard steel? With the wheel I've using, shown in other thread, I'd get a great finish in hard stuff and lousy, wavy, finish in mild steel so I'm thinking on my light little grinder wheel hardness is a big factor? I am using coolant and dress the wheel - I don't think the wavy look is an out of balance wheel as it only shows up in soft steels
if you worked mostly with steel could only take a few wheels to a desert island ....what would they be
try any grit any bond of 5SG Norton.....NORTON, not the made in USA.... the price will STING but I promise you will throw your other wheels away....
I also use 5Sg wheels for just about all my grinding. Mostly cutting tools and hardened tool steels but use 5SG on a large surface grinder to grind large flat pieces of hot ot cold rolled.