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Cutoff Operations CAN be EASY 

Hersch_Tool
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For this week's project we will be finishing up the DIY shop made parting tool holder for the aloris style BXA quick change tool post.
This is a more robust, versatile, and rigid cutoff tool holder that is meant to be an improved replacement for the typical parting tool holder that comes with most aloris style tool posts.
All of the work will be done on the milling machine and will include milling, drilling, and using the dovetail cutter.
I will also briefly demonstrate the use of sub datums on the DRO as a means to keep track of multiple different features, allowing you to revisit those features as many times as you need to perform a series of separate operations on the same feature.
As always, thank you for watching and if you have any questions, criticisms, ideas, etc. please leave a comment below!
My Lathe: MSC / Prince 9517350 - 13x40 Manual Metal Lathe
My Milling Machine: Bridgeport Variable Speed Series 1 "J Head"
My other Milling Machine: Brown & Sharpe No. 2 Plain "light type" Universal Milling Machine
CREDITS:
Music and Sound Effects courtesy of www.epidemicsound.com
/ @hersch_tool

Опубликовано:

 

30 сен 2024

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Комментарии : 55   
@trollforge
@trollforge 6 месяцев назад
Very nice work, both machining and videography. While you are preaching rigidity there is another faction preaching flexture... Have you seen any of these videos?
@hersch_tool
@hersch_tool 6 месяцев назад
Yeah, I have actually. Respectfully, I don't put any merit in it. In my opinion it seems to be coming at the problem from a bad direction. I can see how it might help to alleviate chatter in some circumstances, but not for the right reasons, if that makes sense. On a small machine, it seems to allow a much lower feed rate than is ideal by soaking up the chatter that it would normally cause. What I mean is, in my mind it seems to be masking a problem that's better solved with improved technique and rigidity. Also, I've never seen any modern parting or grooving tool holders incorporating this design, which makes me think that there might be a good reason for that. All of that being said, I could be dead wrong lol. I'm just a guy in his garage, trying to get better, have fun, and share my shenanigans with others. So my opinions are worth about only as much as you're willing to pay for em lol 😂 Thanks very much for watching btw!
@howardosborne8647
@howardosborne8647 6 месяцев назад
Thanks for covering the build videos for this tool holder. It was me who originally asked if you had done a build video. I made about 15 homemade 250-201 style holders to take 16mm and 20mm shanked tools. I still have 2 blank holders without any tool slot milled in them which I plan to make a couple of parting/grooving blade holders from. What I am undecided on is whether to mill the cut-off blade slot horizontal/level or include a few degrees of tilt to introduce some top rake angle into the 'T' section HSS cut-of blade as the original Aloris type have.
@hersch_tool
@hersch_tool 6 месяцев назад
I'm glad you were able to catch the vids! Great idea, thanks again for mentioning it. You can see the direction I went in terms of the rake angle. My thinking is that if I want rake, I can always grind in whatever I need as opposed to always being stuck with whatever is built into the tool holder. I do often run a neutral rake parting/grooving tool as well.
@jimsvideos7201
@jimsvideos7201 6 месяцев назад
9:40 They're speed holes, they make it go faster.
@hersch_tool
@hersch_tool 6 месяцев назад
Yeah that's right, exactly! Just as I intended! 😂
@Rustinox
@Rustinox 6 месяцев назад
I'm sure it works very well, so it is a win.
@hersch_tool
@hersch_tool 6 месяцев назад
thanks man, it's worked very well for me. whenever i go to use the wedge style for whatever reason i'm always reminded how much better it is to have a more rigid holder.
@lawrencesanborn5500
@lawrencesanborn5500 2 месяца назад
I plan on making a similar tool holder...but im curious if you have any issues since the parting tool is perpendicular to the work instead of at a 5-7ish deg upward angle like the other style parting tool holders. Hope this makes sense...newb machinist here lol
@hersch_tool
@hersch_tool 2 месяца назад
@@lawrencesanborn5500 no, not at all. That built in rake angle isn’t necessary.
@col2lin
@col2lin 6 месяцев назад
What you have just made you could/will need more. I say this because other lathe owners tend to say "You can't have too maney". Should I be in your posission I would have got a hold of more mettal & made 2 or 3. Prepairing the stock (2 or 3} time wise requires a little more time as opposed to making the next later. Just an idea.
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks very much. I now have two of them, and many of my other grooving blades are square shank carbide insert blades so I don't think I'll need more than 2 of these, especially considering that I only had one for a while and didn't normally find that I wanted another one. But for tool holders in general, yeah you're right, you can never have too many lol. Thanks again!
@minilathemayhem
@minilathemayhem 6 месяцев назад
I'm going to have to make myself a better cutoff blade holder. Broke a cutoff blade today (in my defense, though, I'm running a bench lathe, so I have to run things a lot faster when it comes to parting)
@hersch_tool
@hersch_tool 6 месяцев назад
It will definitely help. I started out with a small bench lathe and know what you're up against. The added rigidity helps. Use plenty of lube and push through any chatter, once you get "in front of it" you're golden! Good luck and thank you for watching!
@Coopedupintheshop
@Coopedupintheshop 6 месяцев назад
The last video you had talked about how you managed to find one of the fancy tool holders for your mill on eBay. That got me thinking hey I had 3 of those listed on eBay. Well now I have 2 and you were the guy who bought one haha. If your interested I would be willing to work something out to send the other two if you want em
@hersch_tool
@hersch_tool 6 месяцев назад
HAHA, seriously!!? What a small world lol, that is really cool to meet you here! Send me an email and we can chat about it. Cheers!
@voodoochild1954
@voodoochild1954 6 месяцев назад
Nice work. Appreciate that you show the mistakes. 👍🏻
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks very much. And yeah, I figure we all make mistakes, and often the greatest lessons can be learned from them and not always the successes. I like to believe that we are all learning together here, at least that's what I hope anyway because I know that I learn a LOT from the comments and feedback I get on the vids.
@Pete-xe3il
@Pete-xe3il 6 месяцев назад
A few thoughts and tips, at about the 2:45 mark it appears that your getting at least some chips behind the parallel against your moving jaw. That's because there's nothing holding them against each jaw face. An old school machinist trick to fix that. If your parallels are flat enough on there non working face, add a drop or two of any oil to the rear face of the parallel that goes against each vise jaw. What that does is force out and remove any air on that side. Your then creating close to an almost perfect vacuum. And there will be roughly 15 psi per sq. in. of positive air pressure holding each parallel against each jaw face. A few dots of grease can do the same, it's just a lot harder to fully wipe off when cleaning your parallels. Even with a dro I still either do a rough layout on the part or a paper sketch with the part dimensions and dro coordinate points already worked out from each X,Y edge found datum face. If it doesn't look right on the sketch or layout, you'll easily catch it. And that saves a large number of mistakes such as wrongly spot drilled hole locations. The few minutes it takes is imo well worth the mistake reductions it provides. For more complex parts, I'll still do a rough part layout since that reduces confusing any feature locations that may not be symmetrical to the finished parts left, right / top, bottom. Since you already have a dro try edge finding the vises fixed jaw. Enter that into your dro as a known Y axis zero point. That saves having to constantly edge find each parts Y axis datum. If you already know the parts measured width, finding it's center or any other datum in that axis is easy with simple addition or subtraction. For most jobs that will be accurate enough. Just be aware that even the Kurt vises have varying amounts of rear deflection movement on that fixed jaw and away from that known datum point depending on the part height within the jaws, and the closing torque used to tighten the vise. If it really counts, I'll still edge find that jaw, then set up an indicator behind the fixed jaws vertical face and measure it's deflection until the vise is tight, and then make an adjustment correction for it in the dro. For multiple parts of the same dimensions, using a torque wrench each time to close the vise will still get you a repeatable datum point without further indicating that jaw.
@hersch_tool
@hersch_tool 6 месяцев назад
Thank you so much! A ton of great advice you've shared. I'm learning something new every day and sincerely appreciate you taking the time to share your wisdom and experience. I'm trying to get just a little bit better every day. Thank you again, and thank you for watching as well!
@Pete-xe3il
@Pete-xe3il 6 месяцев назад
@@hersch_tool Thanks, but let's not get into the details about how I got that experience and making my own and vast number of what were in hindsight poorly thought out attempts. All that wisdom and experience really consists of is maybe being a little smarter after those errors and then figuring out what doesn't work. 😀
@pikeyMcBarkin
@pikeyMcBarkin 6 месяцев назад
Some seriously great shots. Thank you for your hard work.
@hersch_tool
@hersch_tool 6 месяцев назад
thanks man, i really appreciate it
@syldysnya
@syldysnya 6 месяцев назад
Great video as always! Keep it up!
@hersch_tool
@hersch_tool 6 месяцев назад
Thank you!
@foogee9971
@foogee9971 6 месяцев назад
thank you again, nice work 👍
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks very much as always for watching!
@philmariop
@philmariop 6 месяцев назад
KISS is an engineering award.
@hersch_tool
@hersch_tool 6 месяцев назад
haha, i'll take it! 😉
@TobaccoTooling
@TobaccoTooling 6 месяцев назад
Actually it’s an acronym. It’s not in the dictionary 😂
@Warped65er
@Warped65er 6 месяцев назад
Thx for the vid.
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks for watching!
@mike9500
@mike9500 6 месяцев назад
great work!
@hersch_tool
@hersch_tool 6 месяцев назад
Thank you!
@tomnielsen3661
@tomnielsen3661 6 месяцев назад
That is great, it shows every step of how to build one of our own. I watch a video the other day that showed how to make a extension table for your table saw that you could add a router to it. It never showed how to attach the extension to the table, Anyway, very nice and easy to understand! I kind of like the idea of the guide pins, but as you said, it could just make another problem.
@hersch_tool
@hersch_tool 6 месяцев назад
thanks very much. I spend a good amount of thought trying find the balance between giving the info that's necessary and not getting into the weeds too much. Glad to hear it's working out for the must part. Thanks for the feedback!
@Paul-FrancisB
@Paul-FrancisB 6 месяцев назад
Great video thanks and a project for me and my new to me CXA tool post cheers Paul from the UK 🇬🇧
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks very much and good luck with the project. I hope it works as well for you as it does for me, Ill never go back to the old style! Lol I have feeling that it might be even better in CXA due to the added mass of the larger size. Cheers
@joell439
@joell439 6 месяцев назад
💪💪😎💪💪
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks!
@larrybud
@larrybud 6 месяцев назад
how's the DRO working out?
@hersch_tool
@hersch_tool 6 месяцев назад
it's working out pretty good so far. happy to have it on the machine, makes things so much more convenient
@larrybud
@larrybud 6 месяцев назад
@@hersch_tool always enjoy your vids. I hope this channel takes off for you. You should see if you can hook up with larger channels like Tony, Blondihacks, or Clough42, maybe get some publicity. Your channel is every bit as good as theirs.
@ypaulbrown
@ypaulbrown 6 месяцев назад
wonderful content. thank you, cheers from Florida, Paul
@hersch_tool
@hersch_tool 6 месяцев назад
Thank you very much Paul! I sincerely appreciate the kind feedback
@dannywilsher4165
@dannywilsher4165 6 месяцев назад
Nice!!!
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks!
@ThantiK
@ThantiK 6 месяцев назад
Next time, maybe show using it! :D
@hersch_tool
@hersch_tool 6 месяцев назад
Thanks, I'd wanted to add a section but never got the chance to get it filmed. Thanks for watching!
@pikeyMcBarkin
@pikeyMcBarkin 6 месяцев назад
Thanks for the quick video!
@hersch_tool
@hersch_tool 6 месяцев назад
thanks for watching 🙂
@ypaulbrown
@ypaulbrown 6 месяцев назад
you are a very sincere host.....best wishes,,,,,
@hersch_tool
@hersch_tool 6 месяцев назад
Thank you very much, that's very kind and I appreciate it. Thank you!
@Intensive_Porpoises
@Intensive_Porpoises 6 месяцев назад
Do you find that neutral rake works better then?
@hersch_tool
@hersch_tool 6 месяцев назад
Mmm, I guess it depends? I feel like a little bit of rake lets you get away with being a little less aggressive? It feels "sharper" or something. But then again, neutral rake doesn't seem to want to dig in as much and once you find the sweet spot and get ahead of any chatter runs smooth as butter for me. Id say, at least in my opinion, there's probably a little room for personal preference in dressing the tip of a parting/grooving tool. Of course barring any material differences and other outside factors. I'm sure there's folks much smarter than me who've got more to say about it though.
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