Search found 384 matches
- Fri Aug 31, 2007 6:13 am
- Forum: General Discussion
- Topic: machinint steel tap material
- Replies: 7
- Views: 1340
- Fri Aug 31, 2007 5:47 am
- Forum: General Discussion
- Topic: exactly what is hss?
- Replies: 7
- Views: 2312
exactly what is hss?
I have some A-2 air hardening steel. It is annealed right now. If you heat it and let it cool in air it'll be rock-hard. Is this a type of hss. If not what exactly is hss. Does it have a special name/letter abbreviation? Just curious, as it's something used in many production cutting methods routine...
- Wed Aug 29, 2007 3:51 pm
- Forum: General Discussion
- Topic: machinint steel tap material
- Replies: 7
- Views: 1340
Throw it in a REALLY HOT bed of coals. Let it get bright orange and stoke/fan the fire well. Leave the item in the fire until it burns itself out and is cool enough to handle the piece. This will soften a lot of hardenable steel. Now you can turn it, but it'll be softer than mild steel. So then you ...
- Tue Aug 28, 2007 4:11 pm
- Forum: General Discussion
- Topic: tool grinding woes.
- Replies: 10
- Views: 10072
I'm an old dog, and these new tricks don't come easy! Speaking as another old dog, part of the problem is often our lack of ability to see clearly what we're doing. I had vision that was the envy of everyone until age 45. I could grind a form within a thou with some concentration----but those days ...
- Tue Aug 28, 2007 6:21 am
- Forum: General Discussion
- Topic: tool grinding woes.
- Replies: 10
- Views: 10072
- Mon Aug 27, 2007 6:32 am
- Forum: General Discussion
- Topic: tool grinding woes.
- Replies: 10
- Views: 10072
tool grinding woes.
I spent a bit of time last night trying to get a lathe tool to cut. Turning some 1/2 drill rod oil hardening. It squeals and leaves a "beaver chewed" finish. The shavings were like I've never seen yet. Looked like a saw blade. This comes off the heels of grinding a bit that worked beautifu...
- Wed Aug 22, 2007 2:35 pm
- Forum: General Discussion
- Topic: The "well dressed stone"
- Replies: 10
- Views: 6171
- Tue Aug 21, 2007 7:18 am
- Forum: General Discussion
- Topic: The "well dressed stone"
- Replies: 10
- Views: 6171
The "well dressed stone"
Ive always been one to hop on a grinder and fix tools when needed. Now that I need hss lathe bits it's gone to a new level. I finally grabbed a wheel dressing stone. This is reallly nice! A real pleasure to have that surface the way I need it. Flat on the front and an edge on the sides. Now all I ne...
- Wed Aug 15, 2007 4:36 pm
- Forum: General Discussion
- Topic: carbide/hss hand grinding cutting female threads
- Replies: 2
- Views: 1412
carbide/hss hand grinding cutting female threads
I want to turn a faceplate for my machine. I was planing on making a dummy spindle to use for fit of thread and register boss. My main question is whether this is a place where one uses an indexable carbide threading bit. (for the internal threads on the faceplate)I just can't see how one could grin...
- Mon Aug 13, 2007 3:58 pm
- Forum: Lathes
- Topic: boring bars for a small lathe
- Replies: 9
- Views: 7234
The first part I bored was not really a bearing, but constructed exactly like one. It was the surface a perforating blade butts against on a perfing/scoring/folding machine. The tolerances were very tight. I made it out of nyloil. Came out quite well, considering it really was my first ever attempt ...
- Wed Aug 08, 2007 4:13 pm
- Forum: General Discussion
- Topic: chucking a gear for center boring
- Replies: 10
- Views: 3275
The classic way to bore finished gears, is to place a dowel pin in three equal places around the gear and chuck on them. The important thing is for the pins to be as close to the pitchcenter of the gear as possible ! The pins may even be soft metal, as long as they are all identical in Diameter. As...
- Wed Aug 08, 2007 6:20 am
- Forum: General Discussion
- Topic: chucking a gear for center boring
- Replies: 10
- Views: 3275