MEMBER ITEMS FOR SALE
Custom Knives | Other Knives | General Items
-------------------------------------------
New Posts | New PhotosAll Photos



Go Back   The Knife Network Forums : Knife Making Discussions > Custom Knife Discussion Boards > Tool Time

Tool Time Let's talk shop. Equipment, Tips & Tricks, Safety issues - Post it here.

Reply
 
Thread Tools Display Modes
  #1  
Old 08-02-2017, 04:09 AM
Bigjohnknives's Avatar
Bigjohnknives Bigjohnknives is offline
Member
 
Join Date: Oct 2008
Location: Barhamsville Virginia
Posts: 17
Question Heat Treat HELP!!

I'm starting to gather equipment to transition into doing my own heat treating.

Can someone please tell me the best place to buy a Dewar?

Also what is a good liter size, I'm finding them from 3 to 30 liters.

Anything else I'm may not know you can think of please enlighten me.

thank you

Bigjohn


__________________
Bigjohn
www.bigjohnknives.com

"Lead, Follow or get the heck out of the way"
Reply With Quote
  #2  
Old 08-04-2017, 07:28 AM
Ed Caffrey's Avatar
Ed Caffrey Ed Caffrey is offline
Super Moderator
 
Join Date: Jun 2002
Location: Great Falls, Montana, USA
Posts: 4,254
Send a message via AIM to Ed Caffrey Send a message via Yahoo to Ed Caffrey
Most often a Dewar is used in livestock operations.... Here's a listing for one on facebook:
https://www.facebook.com/groups/knif...01715072067611

Personally, mine holds 54lbs of liquid. The tough part is finding/having a local source to fill your Dewar. You can expect liguid Nitrogen to last only a week or two in a Dewar, unless you take steps to make it last longer.

I built a plywood "box" that my dewar fits inside. The box is lined with 2" of insulation. I place the filled dewar inside, and fill all the airspace surrounding it with vermiculite, and place a piece of R30 fiberglass insulation on top. Depending on the outside temps, a filled tank will last approx. a month.

If you've not already checked into it, be prepared..... a dewar is expensive, and filling/maintaining it isn't cheap either!


__________________




Caffreyknives@gmail.com
"Nobody cares what you know.....until they know you care."
See me at table 2Q at the Blade Show!

Last edited by Ed Caffrey; 08-04-2017 at 10:32 AM.
Reply With Quote
Reply

Tags
buy, heat, heat treat, heat treating, make


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Re-Heat Treat? mrgantz Heat Treating and Metallurgy 4 02-12-2010 03:42 AM
Heat treat? ranger1 Heat Treating and Metallurgy 6 01-21-2007 09:54 AM
A-2 Heat Treat Nathan Taylor Ed Caffrey's Workshop 2 03-27-2003 05:14 PM
W-2 heat treat? Gary Mulkey High-Performance Blades 4 10-03-2001 12:04 AM
Heat Treat Bill Foote The Newbies Arena 1 06-02-2001 08:34 AM


All times are GMT -5. The time now is 03:57 PM.




KNIFENETWORK.COM
Copyright © 2000
? CKK Industries, Inc. ? All Rights Reserved
Powered by ...

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
The Knife Network : All Rights Reserved