The Home Machinist!

What is the difference between them and what is each used for?

Roger

Is anyone knowledgable about the circular cold saws? I want to know the best blade rpm for aluminum bar under 2". And the best blade rpm and teeth for mild steel 2" and less. These saws seem to run very slow (44-88 rpm) and other than speed (and price) I'm wondering how they are different ...

Thanks Harold.

I would like to use the method you describe if I can understand it.

How do I see the pictures you refer to?

I can't find any posted.

Roger




Nevermind. Now I can see them but I'd swear they weren't there before.

Roger

Thanks to everyone for their replies. All were good suggestions but the last two by Harold_V and Big Pete seem to meet my needs the best. Harold_V, You lost me after the part about grinding the tip flat. I sort of understand about relief but it is hard to visualize what you are saying about positive...

MikeG, The reason I do not buy the bi-metal blades is because the welded spot on the blade is what fouls the mechanism and causes the blade to jump off the wheel. I have tightened the blade till I was afraid it might snap and as I said on some pieces of metal the saw cuts alright but when the welded...

I want to drill a blind hole with a flat bottom and don't know how to do it.

My drills have 118 deg points and don't leave a flat hole.

Any suggestions?

Roger

I can't recommend a brand but I bought a Harbor Freight bandsaw that normally sells for about $149. I got it on sale for a bit less. It is OK but the blade keeps jumping off the wheel and nothing I have tried seems to fix the problem. Sometimes it can saw through an inch or two of mild steel without...