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Diamomd tool holder

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George Scollay12/07/2009 21:35:42
19 forum posts
Hi, Has anyone purchased the diamond tool holder that is advertised by Eccentric Engineering,I have been thinking about one but would like to know if anybody has good or bad reports about it, watched the video and was impressed with it,Thanks

Edited By Geoge Scollay on 12/07/2009 21:36:59

Edited By Geoge Scollay on 12/07/2009 21:38:02

David Clark 113/07/2009 09:14:45
avatar
3357 forum posts
112 photos
10 articles
Hi There
I have heard it is very good.
I do have an article to publish on making a tangential turning tool that is very similar.
It will go into Model Engineers' Workshop.
 
regards David
Circlip13/07/2009 12:26:46
1723 forum posts
 
     Regards  Ian.
John Yewbrey13/07/2009 17:34:37
1 forum posts
Hi George, In responce to you question about the Diamond tool holder I can say that it is fantastic.  I have used one now for about a month and would not be without it.
 
Hope you find this info usefull.
 
Regards John
chris stephens13/07/2009 20:55:13
1049 forum posts
1 photos
Hi George,
If you try a Tangential tool holder you will not be disappointed. I have been demonstating my version on the SMEE stand at the last two MEX's, and feedback always seems very positive. Not only do they cut very cleanly, they are a doddle to sharpen. This last point makes them ideal for learners who have not yet learnt to grind a "normal" toolbit. Makes expensive TC indexable bits redundant, almost.
Regards
chris
Jim Whetren17/07/2009 17:05:42
50 forum posts
1 photos
Hi George,
I too have been facinated by this tool varient and have been impressed with the video. However, I find it hard to justify spending £67.23 on a lathe tool.
 
I have had a second look at the graver/chamfering tool I made as per GHT's instructions to use with my hand rest. This was a piece if 3/16 square HSS ground to 45 deg. diagonally by holding it in a small V block. The point of the diamond face is 70 deg. this is of course with the tool tilted to 45 deg. in both vertical planes.
 
If the bit is angled at 20 deg. in both planes, the tip angle is 80 deg. and if it is also twisted 5deg. anti clockwise, there is 5 deg. clearance for both turning and facing with an overkill 20 deg. front and side clearance. The top rake is about 20 deg. each direction.
 
In my usual makeshift way I tried mounting the tool bit this way and took a turning cut the full width of the tool with no problem, and a facing cut of about 2mm. With a slight in-feed the tool was reversed out and the the finish on the face was amazing. This was on a piece of 22mm dia. FCMS.
 
Regards
Jim
modeng200018/07/2009 07:36:00
340 forum posts
1 photos
I have not regretted buying one. The cost of inserts soon adds up to the cost of the diamond tool.
 
John
Tel18/07/2009 09:49:58
avatar
157 forum posts
28 photos
The couple of commercial ones I have seen in action work quite well, even if they are a bit silvery. My home made version works just fine and was considerably less spendy.
 
There are quite a few schemes for making them getting about - a quick web search should give you plenty of ideas.
 

 

Edited By Terry Lane on 18/07/2009 09:57:18

Grumpy19/07/2009 09:54:12
4 forum posts
  I've used the Diamond tool for three or four years now and hardly use anything else. Aside from a parting tool and boring bar I hardly use anything else
George Scollay03/08/2009 20:22:40
19 forum posts
I have gone and purchased the tool and tried it out ,what a pleasure to use and to sharpen it is so easy, I know the price is high but as modeng 2000 states you soon spend the same money on other tools,looking forward to using it more often
Colin Reed06/08/2009 09:12:19
14 forum posts
George
 
Are you in the UK, and if so did you purchase your diamond toolholder from bay-com? If so I was just wondering how much it ended up costing in UKP, import duties etc..
 
Regards
 
Colin
ken heppener06/08/2009 09:57:15
24 forum posts
24 photos
Hi George
 
I just ordered one yesterday.....I watched the vidio and was most impressed....Can't wait to try it out....Regards Ken.
D.C.Clark06/08/2009 13:06:17
16 forum posts
8 photos
Hello Group,

Here's my implementation of a tangential tool holder on my Sherline lathe.  I  adapted my design from an article by Marcelo Jost in the January-February 2008 issue of "The Home Shop Machinist" .  He was inspired by an article in Rudy Kouhoupt's Shop Wisdom volume 3.
 
I've been very pleased with it's performance.

 
David Clark in Southern Maryland, USA
chris stephens06/08/2009 14:19:25
1049 forum posts
1 photos
Hi David,
An excellent interpretation, do you have clearance problems on larger diametres?
chris 
keithmart06/08/2009 14:25:39
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165 forum posts
QUOTE: 
Posted by D.C.Clark on 06/08/2009 13:06:17:
an article by Marcelo Jost in the January-February 2008 issue of "The Home Shop Machinist" . 

 
Hi
I have the magazine in question, it was January/february 2009. The article is 14 pages long, including pictures.
It is something that I have considered making, and, now maybe I will get down to it.
regards
Keith
Leeds UK

 

George Scollay06/08/2009 20:25:22
19 forum posts
HI, Colin I am in the U K and purchased the tool from Eccentric Engineering who come from Australia,Tool price was 125 dollars + 12 dollars postage which was somewhere about £68, and Ken you will not be disapointed with your purchase
Colin Reed06/08/2009 20:28:08
14 forum posts
Posted by George Scollay on 06/08/2009 20:25:22:
HI, Colin I am in the U K and purchased the tool from Eccentric Engineering who come from Australia
 
Thanks George, that's just what I was after.
Colin
D.C.Clark06/08/2009 21:16:33
16 forum posts
8 photos
Thanks Chis,
 
The tool holder does not interfere with the maximum clearance between the Sherline spindle axis and the top of the cross slide table.  For larger diameters, those that extend below and in front of the table, the tool is limited to facing and about 3/4 inch of turning.  This could easily be extended, but I would make the tool holder wider for greater stiffness.
 
Thank you, Keith, for correcting me on the year of issue.  I've attached some "in process photos".   As you see, I created the double compound angles by using Sherline's tilting angle table, rotated on the mill table.  This allowed me to machine all the angles in one setup, only changing the position of the the mill vise on the angle table.  The material was 12L14 steel.
 
 

Layout and roughed out.
 

Double compound angle setup
 

Milling the front face
 

Drilling holes for clamping screws

Edited By D.C.Clark on 06/08/2009 21:18:37

Edited By D.C.Clark on 06/08/2009 21:20:12

russell07/08/2009 04:50:43
142 forum posts
i also am very reluctant to spend money, but this was worth it. I use it on my 1915 drummond flatbed, and it successfully overcomes my inability to sharpen a tool.
 
i thought about trying to make one, but i have little enough shed time as it is, and making a tool to make a tool to make what i wanted in the first place seemed one step too far.
 
russell
(australia)
david sympson07/08/2009 20:32:03
1 forum posts
       Hi George
                         I made  four of these tools about  20 years ago after buying a pre-war
commercial one at a car boot sale. I made two with straight shanks one to fit a Dickson
quick change tool holder and one to fit a quick change of my own design
   The straight shank ones have had very little use but the two others have had 20 years
hard use and I dont know how I managed without them
                                           Dave Sympson. 01430 861623 YORK area
                                           [email protected] 
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