markb

Went out today at 7AM till10:30 and got these bins ,abalone shell, old box and 4 stage lights, these lights are better than last weeks,they take standard flood bulbs and have clamps for hanging.

Thanks Steve
I did fumble on the way to quench and missed it. Try again today.

I ground a blade today and put it my oven to austenitize 1525 F, 5160 double edge dagger. Electric fire brick oven ,(old wax burn out kiln.)

When I opened the door almost immediately the tip cooled to black about a 1/4" back.

It was ground pretty thin .030 or less.

Anybody have this problem or think of a way to get the blade to quench fast enough. I'm sure I can't grind that thin for one thing.

Mark

Thanks for looking Rich.
Mike, I got the 10" from KMG. As to optimum size ,I don't know, many people seem to use 8" I went with 10" for a little flatter grind, It may be easier to grind with an 8" because of the tighter arc, when you establish the dish in your blade it kinda clicks in when you press the blade to the wheel, this is speculation on my part, so hopefully those with more experience will chime in.

I'd like to see your grinder, what size wheel are you using?

I'm about a mile from Big R (140&62) bring mikehr over with you and try out the KMG.

Mark

I don't know if this is the place to post these pic's but I got all excited about doing a hollow grind.

10" wheel KMG
1/4"x11/4 mild steel
marked 2 guide lines aprox. .050

I started out to do single edge grind but couldn't help trying the double edge, so I had no center line, made a push stick out of oak flooring piece, and followed the chat tutorial
didn't concentrate on the plunge too much with everything going on with position etc.

Off to burn up more stock. Thanks for looking

Happy campers:D

Thanks Christopher

marks
Many members move metal, mostly mer mortal men. Might meet more midday.

Melcome
markb

Excuse me, too much coal dust, WELCOME, lots of normal helpful people here. Enter a location to help people possibly connect with you.

I'm back on this drill size thing again. I guess it's more of a rant.
Seems the system is illogical (refer to chart).

I started using micrometer to measure my blades, (thousands of inch) thinking in decimal terms, but not metric :confused: so trying to pick a drill a little oversize for a given dimension (pick one) :mad: still confused

What would be easier: metric micrometer, metric stock, metric drills?

Letter,#, fraction, metric drills:o

Whats standard machine shop measurement system?

I guess this is an old argument, I'm just becoming aware of it.

OK I feel a little better, back to my chart.
Drill Size Conversion Table

Never seen one, nice find, I would imagine most of them would be missing most parts so value of yours is up there.
Did the stand come with it?

I've been looking for leather for sheaths for about a month, got some to day at a sale around the corner $7 got 10 of those theater spot lights for the grinder photos etc. $15
Some days zip others bingo.
Three hours average every saturday although I have been skipping some lately.

Welcome Ram, enjoyed your pics.
Check out knife chat fridays at 7pm( don't know what time that would be in India).

Post some pics we'd like to see your work.

My favorite shop tool is the Milwaukee 6232-6 6 Amp Portable Band Saw

Handle material or Hood ornament

3 metals and wood ,good combo.

Cool stuff.

File teeth are better suited for bowies and rough type knives, I say go for the clean look.
Just my opinion , I like the file look just not on that one.

Mark

Nice looking set of knives, be proud.:D

1971 ASM Heat Treating, Cleaning and Finishing

4340 austenitising temp.-1500-1550F

BHN-standard ball 285= 29.9 rockwell C-scale 150-kg load brale penetrator,

temper 2 hours at 1200 degrees F, from austenitising temp. of 1500F quenched in oil, for section size 1/2"

This book gives hardness scale conversion charts but just happened to find a chart with your steel selection.

They say normalize@ 1600F for a BHN of 388 1/2" bar dia.


From Bethlehem Steel ,temper 1100-1225F

Hope this is helpful
Mark

Make a simple arrow and wrap it so the two ends overlap. I used to do these in silver.
Mark

Glad to see you're havin' some fun. That's serious work for the rest of us.;)

Your choice of materials and workmanship compliment each other, not too flashy, shows your confidence, creativity, and expertise.

Mark

Great proportions, some say smaller is harder to do?

I really like the shape-design.

Whats an EDC?