Putting then Diamond Tool Holder to work #1

I get a lot of questions about the diamond tool holder, which I use a lot, so we are going to start off doing some cutting of 316SS. Both for speed, what kind of SFM can we get away with, and DOC on a reasonably sized machine for a home shop (5hp)
The diamond tool holder is available in the states from these folks
www.bay-com.com/
The diamond tool holder is made by these folks
www.eccentricen...
The Teledyne Vasco document I discuss in the video is here in my drop box
www.dropbox.co...

[@Abom79]

Very fun and informative video James. I enjoyed it. I appreciate the discussion about different high speed steels. That's something I need to continue studying my self. I like your two formulas, and I decided I'm going to write them down and keep them handy, and start using them more often to see how my memory works compared to the real numbers. I never used one of the diamond tool bits. Very clever and looks to work great. I appreciate the comment about me. That centering technique I picked up from dad and it's stuck with me all these years. Good job on the video, and thanks for the share. I be looking for part 2. Adam

[@RustyInventions-wz6ir]

Just found your channel and Subscribed. Very interesting. Nice work

[@RaysGarage]

Hey James, Excellent video, I too use and have been asked many questions about the Diamond Tool Holder. I have both the 16mm RH and the 12mm LH holders and have had them for several years as well. I did a barrel threading video some time ago using the 16mm RH holder with excellent results! I have also had several request to do a video on these tool holders, just have not had the time. Thanks for doing this video, as well as doing a great demo! ATB, Ray

[@jtkilroy]

Lots more coming, mild steel next the aluminum.

[@TheOwenGiles]

Thanks for the share. I recently got a diamond tool holder but have yet to find the opportunity to give it a work out. It's great to see someone else's experience so that you can relate it to your own. Looking forward to your next installment.

[@JimmysCanal]

Hi James, Great video, thanks for sharing with us! Eccentric Engineering has improve the angle of the holder and you can do now facing and turning without the need of adjusting the tool post. Also they make The FoR (Front or Rear) Inverted Parting Tool, but probably you know that, anyway. Looking forward for part 2. Jim.

[@deanerichardson8930]

Thanks for the video, I have wondered for a num ber years about those diamond cutters, I appreciate the education. THANKS again!

[@JackHoying]

Lots of great information here. I've been thinking about making one of these tool holders for quite some time and plans/ideas are easy to find on-line. Thanks for this, Jack

[@pierresgarage2687]

Hi James, Interesting tool, with easy sharpening...! Fun for fast maintenance on the tool. About the power drawn by the motor, you will need to get a "Power meter" to get an accurate reading, cause on inductive load like an electric motor, there will be a phase shift that doesn't represent the real drawn power when you multiply amps per volts... As an example my 20 HP. motor on my phase converter, when idle, draws 26 amps on 230 volts, that would equate to 5980 watts. When measured with a "Power meter" the reading is about 1100 watts with a cosine of .16. The volt x amps result will get closer to reality when the load will increase. Thanks for an excellent video on cutting metal with HSS tools. Cheers, Pierre

[@jtkilroy]

Thank you Mr. Beaudry, for that information, I do have a lot of reading to do on the topic of three phase power monitoring it seems.

[@willywgb]

Hi James Great Video with lots to learn. I noticed during the 1500 RPM .040 DOL 0.006 FPR demonstration that the Tool was removing a little material upon returning the Tool to the start position. The Shaft was likely bending a tad during the cutting pass and that is why it was cutting on the return. Another indicator of trying to remove to much metal to fast. All other demonstrations showed zero material removal upon returning the Tool. Looking forward to the Aluminum demonstration. Thanks for the Video. Cheers Bill Creemore, Canada

[@jtkilroy]

No doubt at that speed the tool bit quickly gave up the ghost and the work piece pushed away from the tool.

[@outsidescrewball]

Good info...thanks

[@bcbloc02]

Nice video, never seen a tool holder quite like that. Can you easily put a chip breaker in it? I don't much care for razor wire on my lathe.

[@michaelhayward7572]

Why do none of you You Tube machinists use a dedicated centre height tool/ guage? Easy to make, super quick to use. Like your machine tools. Subscribed. Regards from NE Thailand.

[@fromjunk2newstuff]

I just take my diamond tool holder and flip it over on a table and set the tool bit until it touches the table. Then my dedicated quick change holder is set to this height. Done. Or if you use a lantern style tool post like I do. Make the tool post spacer for that height. Done

[@fromjunk2newstuff]

@settle down Beavis I measure it and the tool bit only sticks out 3/8" ,not a concern in this case. It's a fool proof technique to set the tool bit on center every time you need to take it out and reset it in the tool holder.

[@CruiserMac]

Very informative video!

[@bigman6168]

How to grind the lathe tool for finishing? The Diamond Tool Holder really works!! Thank you so much!!!

[@AbhinavSG]

James Kilroy thanks a lot for the informative video. Downloaded the article, will be a great read & enhance some of my very limited knowledge. The two formulae were a great piece of information. Just wanted to know if you could help me on making a quick change tool post for my 20" x 120" lathe. Been searching the net, found quite a lot of designs but couldn't find a full proof manufacturing drawing for one. Present Tool Post is a 4 Way 6" x 6" x 5" square tool post with an admit for 1 & 1/2" square shank. Thanks

[@swarfrat311]

A very interesting and informative video. Thanks for sharing! Try as I may, I cannot find the "Booth Tool Center-Height Adjustment" procedure in the Machinist Handbook :-) That's a pretty neat trick. For your power meter, I assume you will use a "donut" type current transformer and connect it's output to an ammeter. (Depending on the transformer used, you may have to include an amplifier to drive the meter.) I will have to get a cheapo ammeter like yours. I was considering shelling out $175 for an ammeter attachment for my Agilent DMM. Looking forward to the rest of the series. Have a good one! Dave

[@CompEdgeX2013]

The tool holder and grind together seem to give a representation of a CNMG insert shape. Have you ever tried adding a chipbreaker using a thin diamond wheel on a dremel? Colin

[@chrisstephens6673]

Hi Colin, adding a chipbreaker is entirely possible but you would loose the main benefit, that of the easiest to sharpen HSS tool you can get. The beauty of these tools is that you only ever grind one face which makes them ideal for machinist newbies. For any body interested, the vee groove sharpening jig works better than the Oz one as the grinder striations run in your favour, for both facing and sliding cuts, rather than just one. Been there, done that etc. ATB chris

[@CompEdgeX2013]

I see a ground chipbreaker to be an improvement worth doing. It doesn't add a lot of work to the resharpening and only minimal more grinding. While watching I too was thinking that a jig holding the toolbit so the grinder runs diagonal might also be easier. Be interesting to try one out. I bet it's pretty good for aluminum. ;-)

[@chrisstephens6673]

Yes, they work very well on Aluminium and brass steel plastic etc. Finish can be excellent especially if you take a back cut at the last setting to take a final shave. Made my first one about 6-7 years ago and it is my go to tool for most things, even made one that takes 6mm Sq. solid carbide which I use for turning down case hardened gearbox shafts. If you are thinking of getting one, get the newer type that allows you to have tool post square to the work or make your own, it wont take you long and saves money too! There are many designs on the net, some better than others, but all will give you an idea of their benefits so you can make an informed view about buying a pro made one. Tangential parting tools work very well too but have limited depth of cut.

[@HMartins-351]

Withe the ampmeter settings as you described, you will end up caching the motor start current peak not the maximum working current. Motor start current peak will always be much higher than maximum motor current consumption at maximum power. Ampmeter response time will hold the peak current value below maximum peak depending on ampmeter response time itself (slower will hold lower value than reality). To do what you want you will have to switch hold function off and keep looking to the display.

[@jtkilroy]

I figured that out after getting a reading that was well beyond the current capacity of the breaker on the machine! Thanks for the feedback, I do appreciate it.

[@Newmachinist]

Hi Jame Great Video on the tool holder. Had looked at the tool holder before but always thought it was a gimmick I will look into it more seriously after seeing your video - thanks. Just curious can you tell me the service voltage to your shop and if it is single or three phase. Duhh I thought I put this same posting a couple of days ago but don't see it anymore. Rod

[@apfyts]

Hi James, Eccentric Engineering makes a tool holder now that does allow facing and turning when the tool post is perpendicular to the lathe axis. Check it out.

[@chrisstephens6673]

I believe they made the tool at an odd angle to make it a compromise for threading. Better to do as I did and make a dedicated holder for threading, two good tools instead of one half-hearted.:>) To give them due credit, they made the new version in answer to peoples comments.

[@douglasthompson2740]

What are the practical limitations of tool bit size as regard heat dissipation and edge strength? Seems that 1/4 bit would be limiting in its abilities as compared to a holder designed for a 3/8 or 1/2 inch bit? Very interesting video. I keep thinking about these holders but the price is a bit much to swallow especially if you want the left and right holders. Good job. Doug

[@arkansas1313]

Interesting and very educational. Thanks....13

[@wanabear5716]

Maybe a little chip breaker added might help :)

[@rickboh]

LARGE PRINT IS GOOD

[@jtkilroy]

WORD

[@rickboh]

James Kilroy (-:

[@ShuffleSk8Ter]

The diamond tool bit holder is NOT tangent to the work! there is a 12deg angle like most other tool bits that you grind its just positioned differently kinda all smoke and mirrors but interesting none the less

[@ZenMinus]

Of course it is tangent to the work! If you extrapolate a line from the BOTTOM of the tool bit, parallel with the tool bit and extend that line PAST the tool contact point to an imaginary point above the material being cut, that line is TANGENTIAL to the "circle" of the material being cut. The angle to which you refer is irrelevant, the line describe above remains tangent to the work piece. :-)

[@ShuffleSk8Ter]

ZenMinus Hi not trying to argue but you are absolutely...if the tool was tangent it would not cut its at about 12 deg relief angle so with that being said its not tangent..I can go into much more but i don't feel like arguing ...but its mostly tangent LOL

[@Opinionator52]

Great attention to detail... And a very interesting tool! Thank you for your efforts. :o] O,

[@theAustriaball]

Me: Hey camera, I would like to film this machining process camera: *N Ü T*