Engraving Forum.com - The Internet's Largest and Fastest Growing Engraving Community

The Internet's Largest and Fastest Growing Engraving Community
Discuss hand engraving using basic to the most advanced methods and equipment
Forum Members: 14,761. Welcome to our newest member, Bruno
EngravingForum.com - Domain since Feb 7, 2003

Graver Video Conferencing is empty Join now!


Go Back   Engraving Forum.com - The Internet's Largest and Fastest Growing Engraving Community > Forums > Tutorials and Contests - Hand Engraving Forum
ENGRAVING TOOLS - Paypal accepted Classes Glossary Feedback Tips Sharpening Bulino Videos Forum Policies

Reply
 
Thread Tools
  #1  
Old 02-27-2009, 07:07 PM
carl bleile's Avatar
carl bleile carl bleile is offline
Platinum
 
Join Date: Mar 2008
Location: cincinnati,ohio
Posts: 382
Default Making your own grinding, mandrel

For those of you who like to make your own things here is a look at how to make a 4 inch grinding mandrel. First get, 4 inch bolt, 3, ½ inch washers, 3 inches of tubing-1/2 min. i.d. x 5/8 or more o.d. and ½ inch nut.
Everything has to be trued off the shaft of the bolt. First step is to turn the threaded end down to 3/8 x .650 long, file burr off threads. Second step true the inside face of the bolt remove as little as possible also make a 1/64 under cut where the bolt face meets the shaft
Third step true both ends of tubing to 2 inches .375. When using thin grinding discs use a washer between bolt head and disc, one between disc and spacer and one between spacer and nut. Snug nut down do not over tighten. There will be a bit of run out because of the difference between holes and bolt sizes this should not effect grinding. Thick discs may also be used but use only one washer between nut and spacer. Approximate cost, bolt,
Washer, spacer, nut at local hardware $3.oo, gas to and from $1.50, labor and trouble $7.oo per hr. x 2 = $14.oo, total aprox. $18.50. If your drill press is so worn out and wobbly it won’t even drill correctly this ain’t going to work, also don’t even think of buying a bolt with out making it true and sticking the stuff in your drill press. As a matter of fact don’t even fool around with it just buy one from Lindsay.
Disclaimer, I do not recommend anyone doing the above, go see a professional!
Carl Bleile
Southwest,Ohio
Attached Images
File Type: jpg IMG_0777.jpg (45.1 KB, 518 views)
File Type: jpg IMG_0778.jpg (43.4 KB, 466 views)
File Type: jpg IMG_0782.JPG (154.8 KB, 446 views)
File Type: jpg IMG_0785.jpg (101.6 KB, 433 views)
File Type: jpg IMG_0786.jpg (76.4 KB, 422 views)
File Type: jpg IMG_0789.jpg (93.6 KB, 419 views)
File Type: jpg IMG_0794.JPG (184.5 KB, 431 views)
File Type: jpg IMG_0795.JPG (190.3 KB, 430 views)
File Type: jpg IMG_0796.JPG (183.5 KB, 454 views)
File Type: jpg IMG_0797.JPG (127.2 KB, 516 views)
File Type: jpg IMG_0798.JPG (168.0 KB, 554 views)

Last edited by carl bleile; 02-28-2009 at 03:38 PM. Reason: wrong number
Reply With Quote
  #2  
Old 02-27-2009, 09:06 PM
Mack's Avatar
Mack Mack is offline
Steel
 
Join Date: Nov 2008
Posts: 65
Default Re: Making your own grinding, mandrel

OK Carl. You are an inspiration. To say the least. I am going to make me one this week to go with the sharpener I made.
Reply With Quote
  #3  
Old 02-28-2009, 12:42 AM
ELeasure ELeasure is offline
Steel
 
Join Date: Mar 2008
Location: Western Colorado
Posts: 39
Default Re: Making your own grinding, mandrel

I've got to make one of these!
Reply With Quote
  #4  
Old 02-28-2009, 01:13 AM
airamp airamp is offline
Platinum
 
Join Date: Mar 2008
Location: Scottsdale, Az.
Posts: 684
Default Re: Making your own grinding, mandrel

Hi Carl,

Very nice photos and thread.

I few months ago I picked up (and trued) 3 arbors for Bryan Bridges.

I use a Powerstrop arbor (1/2") that has a large washer type base than 2 larger washers and a large (flat nut).

I got it from Woodcraft supply store.

They sell the arbors alone for about $6.50. they are not as long as your from the drill chuck but the bottom is almost flat.

( I trued the bottom large washer type base on a lathe since Bryan wanted the lap to spin within .001).

I didn't use the washers at all with the trued arbor since they were just pressed and cupped metal and would throw off the lap. So it was just the arbor,lap,nut and in to the drill press.

The arbor has a 1/4 inch saft for mounting.

Here is a link of what the power strop (with a leather strop mounted to the arbor i am talking about).

http://www.woodcraft.com/family.aspx?FamilyID=220

Note : the ad says a 1/4 inch arbor but the nut and threads are 1/2 inch perfect for the diamond laps.

Maybe the leather strop could be used also to polish gravers Heels??

Looks like your set up works great too.

AirAmp
Reply With Quote
  #5  
Old 02-28-2009, 04:13 PM
carl bleile's Avatar
carl bleile carl bleile is offline
Platinum
 
Join Date: Mar 2008
Location: cincinnati,ohio
Posts: 382
Default Re: Making your own grinding, mandrel

That leather wheel would be good to get the fine wire edge off tools after finial sharpening.
Carl Bleile
southwest, Ohio
Reply With Quote
  #6  
Old 03-01-2009, 06:19 PM
Sandy Sandy is offline
Copper
 
Join Date: Dec 2006
Posts: 6
Default Re: Making your own grinding, mandrel

What type of disks are you using? and where do you get them?
Reply With Quote
  #7  
Old 03-01-2009, 11:45 PM
carl bleile's Avatar
carl bleile carl bleile is offline
Platinum
 
Join Date: Mar 2008
Location: cincinnati,ohio
Posts: 382
Default Re: Making your own grinding, mandrel

I use the Lindsay discs http://www.handgravers.com/ the 100 grit is great as I can remove a lot of metal from a blank quickly where before with other equipement it was very slow going and could only get 260 max. grit. I usualy like 3 or more sizes of face on same shape cutters, different V angles, flats for sculpting and background removal, scrapers, gold inlay, bulino and banknote. Before I would dread making up tools it just took so long to grind them down, now if I need a new or special tool it only takes minutes and I'm back to work then I add that tool to my inventory.
Carl Bleile
southwest, Ohio
Reply With Quote
  #8  
Old 03-05-2009, 06:47 AM
Sandy Sandy is offline
Copper
 
Join Date: Dec 2006
Posts: 6
Smile Re: Making your own grinding, mandrel

Carl,
Thank you for the info. Your use of the drill press is great, I think this will help be solve some of my grinding problems. Thanks again

Sandy
Reply With Quote
  #9  
Old 09-13-2018, 10:11 AM
cuartino2015 cuartino2015 is offline
Copper
 
Join Date: Oct 2015
Location: chile
Posts: 5
Default Re: Making your own grinding, mandrel

Good afternoon, I've been in this group since 2016, but I never had the opportunity to ask a question, I saw all the wonderful works and I learned little by little, can I ask what is the ceramic disc and how does it work? Thank you very much
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Conduct
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


All times are GMT -6. The time now is 12:21 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.