wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Aug 10, 2011 15:20:39 GMT -5
stainless steel is a PITA
it's the nickel content that makes it so tough, and so good to use for what you have it for
Cobalt steel tooling lasts very well and is quite forgiving when compared to carbide, which unless you have a very good setup, will just chip and become useless very quickly
When I am cutting on stainless, I use cobalt steel tooling, plenty of coolant, and I go nice and easy.
Also, it is possible to use a friction wheel to cut stainless like mild steel, it just takes longer and will eat up the cutting discs.
Take your time, patience will be rewarded.
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wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Aug 10, 2011 16:07:33 GMT -5
I use my plasma torch whenever I can, but since I know most people don't have one, I offer advice to match the typical tools in a garage.
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Post by ernie wrenn on Aug 16, 2011 14:32:46 GMT -5
OUCH!!! You could use a "offset bolt". I have made that mistake to many times.
I finally figured out drill one hold at a time, insert bolt and nut drill another... repeat as needed.
Easy way to find center to center... measure from the "outside of one hole to the inside" of the next THEN center punch with a tap.
Is that the 1/2 plate of stainless?
ernie
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wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Aug 16, 2011 16:14:45 GMT -5
you can always weld the hole shut and try again...
I can't tell you how may times I did that before I had a good drill press and proper techniques
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Post by Johansson on Aug 17, 2011 0:29:40 GMT -5
You don´t have access to a mill? Then it would be easy to open up the hole in the right direction.
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Post by ernie wrenn on Aug 17, 2011 8:26:19 GMT -5
Wielder up and redrill. The only way is the best way!
That will put a damper on a project.. To many times. But 3 out of 4 aint bad!!!
ernie
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Post by Johansson on Aug 17, 2011 10:29:06 GMT -5
I don´t think it is that easy to weld a hole drilled in 10mm ss316 and redrill it, the piece have probably work hardened from the first drilling and after adding heat during welding it must be like drilling in glass...  |
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wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Aug 17, 2011 11:05:35 GMT -5
Nah, fill it back in with 304/308 the HAZ for that hole will be about 3cm (give or take depending on the heat input) and just let it cool in open air, it will be just fine to drill.
Remember that work hardening is reversed by annealing, even though you can't heat treat 300 series stainless, you can and should anneal it after a significant amount of cold working has been done to it.
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wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Aug 17, 2011 16:17:13 GMT -5
If at first you don't succeed, improvise!
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Post by turbochris on Sept 2, 2011 8:02:22 GMT -5
I love laser cutters. I'm around them all day. I can use them whenever I want. But for some reason I just like get out the drill and saw (and hammer) and go primitive. It's like returning to my roots, it feels good. Don't let those laser cutters take this away from you, it almost ruined me!
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Post by propellanttech on Sept 2, 2011 12:27:01 GMT -5
I love laser cutters. I'm around them all day. I can use them whenever I want. But for some reason I just like get out the drill and saw (and hammer) and go primitive. It's like returning to my roots, it feels good. Don't let those laser cutters take this away from you, it almost ruined me! Wow....never worked around cutting lasers..... I did have some time around Rofin Marking lasers (YAG). That was great while it lasted. We also did some welding with lasers (also YAG). That was great. Wish I had one. Would make building a combustion chamber quite easy. James |
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Post by turbochris on Sept 5, 2011 7:21:51 GMT -5
If you guys ever want to ruin your fun and actually use laser cut parts, give me a shout. I have some friends that will do small runs and one offs and the cost usually isn't bad.
Watch out for the YAG lasers, they'll fuck your eyes up really bad. I won't go near one after some of the stories I've heard. I'll work naked around a 6kw CO2 with no protection whatsoever but I wont go near any fiber lasers or anything in that wavelength.
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Post by propellanttech on Sept 5, 2011 14:35:00 GMT -5
If you guys ever want to ruin your fun and actually use laser cut parts, give me a shout. I have some friends that will do small runs and one offs and the cost usually isn't bad. Watch out for the YAG lasers, they'll fuck your eyes up really bad. I won't go near one after some of the stories I've heard. I'll work naked around a 6kw CO2 with no protection whatsoever but I wont go near any fiber lasers or anything in that wavelength. Yeah....we had YAG detectors just to insure there were no leaks from the unit after reassembly. We always has light screens and glasses on when working on them. The emitted light is very dangerous to your eyes, and is invisible of course. Good to know about the cutting...... James |
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Post by turbochris on Sept 6, 2011 7:24:06 GMT -5
you'll have arms like a gorilla after you get done hacking all that stainless.
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Post by ernie wrenn on Sept 6, 2011 8:12:22 GMT -5
Send it down and I will mill it out for you.. Save your right hand for the right job..
ernie
Compucar nitrous co
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