Some geometry basics and cutting Tangent radii

This video starts with a few helpful geometry construction basics you should know and finishes with a rotary table demonstration on how to easily and quickly setup and cut tangent radii of different sizes using the AI alignment pin. Links below.
Advanced Innovations, LLC website: www.advancedinnovationsllc.com/
Rotary Table Alignment pins available at:
www.advancedinnovationsllc.co...

[@johnmichaelgavin3617]

This gentleman has come to my rescue more times than I can count at this point. Love your videos

[@joepie221]

Thats for the comment. I'm glad they help.

[@richardcranium5839]

magic shirt change at 4:45 wow you're good and back at 5:40 thanx for the lesson. i'm gunna start calling you clutch cuz every video get my brain back in gear lol

[@zachaliles]

I just shared your video with my little sister. She's an architect. She's the first person I thought about when you started talking about radii and tangents.

[@boblasley5640]

Thanks Joe! I always learn from your videos and even more when I go back and rewatch them. You pack more in than I can absorb in one viewing. You are a national treasure sir!

[@joepie221]

Much appreciated. Thank you.

[@sebastianhamann9846]

Brilliant, thanks Joe, keep up the great vids! As a machinist/ tool and die maker for twenty seven years I have some great tricks, but seeing new ones to put in my arsenal via you tube is the greatest! Can't thank you enough for taking the time to share your knowledge!

[@TheMuzShop]

Thanks Joe, super interesting video.Every time I watch your videos , I walk away a little smarter .... 👍👍

[@joepie221]

Mission accomplished.

[@lawrencewalraven5137]

I don’t know how you are able to consistently explain such complex things to make them simple and easy to understand in every video. Thanks!

[@joepie221]

I remember what it was like to learn this stuff. I also know people learn in different ways. I try to cover both. Thanks for the comment.

[@James-fs4rn]

👍Keep the geometry lessons coming. Always good to know for manuals or CNC. Thanks for sharing!

[@Redmech80]

Extremely grateful that you put these videos up. Lots of great info.

[@themotofixery]

Bought a rotary table and I can see it would be so easy to get lost in the sauce so to speak. I feel like my mind would turn circles double checking stuff and trying not to overlook some easy step. These videos sure help a ton! Just ordered one of your set-up tools. Can't wait to make some chips. Thanks for all your help!

[@EverettsWorkshop]

Thanks for sharing these geometric setup construction videos, I quite like them. You have a good way of explaining the math involved in them.

[@mikemarriam]

Great tutorial. This should be shown in every high school geometry and trigonometry class as the perfect answer to what would I ever use geometry or trigonometry for?

[@joepie221]

thats how I feel about knowing an earthworm is both male and female. Unless I'm ever on Jeopardy, I can't see the need for that.

[@erictwers2867]

That video sold a T shirt. Keep being you. I enjoy the distillation of the Frigonometry.

[@joepie221]

Thanks. Wear it someplace amazing and send me a picture.

[@Ferndalien]

At many of the steps, and throughout the whiteboard explanation, I could say about any ONE step, "I know that." If I had to put it all together the first time myself, I would have gotten off track somewhere. Thanks for putting it all together.

[@joepie221]

Thanks for watching.

[@christophercullen1236]

Dear Joe I have just finished watching all your videos from start to finish. I would still like a video on climb cutting, procedures and do's and don'ts and techniques. Some of your subscribers have also requested this! I was born upside down so it's hard us down under!

[@jeffryblackmon4846]

Thank you, Joe. You have presented a lot of information in a short time period. I will watch it several more times to absorb it all. Thanks for taking the time to do these videos, even in the oppressive heat. The train model- very impressive, especially since it works.

[@joepie221]

It was spectacular in its detail.

[@edh.9153]

What a great teacher you are! Thank you very much for all your videos. Ed Hicks

[@joepie221]

Thanks Ed. Glad to do it.

[@toolbox-gua]

As usual, yet another great video with helpful and useful information.

[@tobarapprentice6618]

I am constantly appreciative that the technology exists today that so much information can be disseminated so effectively; that a worldwide audience can learn and benefit so readily and easily is beyond words, but truly amazing. When you add a professional who is willing to pass on the fundamentals, but also his/her experience, and in so many demonstrations, I think that those of us who are learning this trade/hobby are extremely fortunate beneficiaries. I’m not sure that I could accurately express my sincere thanks Joe, but as my skills improve, and find that I am able to “do” more in my shop, it is because of creators like yourself that I am achieving success. Thank you for your time, your effort, your expertise and for using this venue.

[@joepie221]

Its comments like this that make it worthwhile. I enjoy knowing I may be taking the aggravation out of someone's effort and possibly keeping them safe in the meantime. Thanks for the comment. Much appreciated.

[@jimsmith6284]

Yet another great video always learn something watching your instructions thanks,

[@graemebrumfitt6668]

Remember doing tangential circles in school when I was about 15 and had completely forgotten about it until seeing this vid. TFS Joe, G :)

[@Smallathe]

WONDERFUL DEMO!!! While I don't consider trigo to be a problem (had worse during my graduate degree :) The application of the trigo to metal work was outstanding and just blindingly beautiful. Thank you so much!

[@davids.682]

Joe, another great informative video! I setup my rotary the same way and mine is not true to the center hole either. To be totally geeky about it, you did leave out one step indicating it. You did not check the tram of the head. If the tram is out, the center of the spindle will be in a different XY position at the quill verses the face of the rotary table. In my experience, if my tram is out just a little, and I have to crank the knee up or down during a setup, I loose registration on my part. Might explain that small flat you ended up with.

[@nigelspender4931]

Yet again another great video. Many thanks for taking the time to pass your knowledge on.

[@joepie221]

Glad to do it.

[@mxcollin95]

Never thought about the rotary table bearing not being concentric with the bore. Great tip and great video...thanks! (Guess that’s the difference between a professional Machinist and a hobbyist like myself. 👍)

[@christopherlease]

Thanks Joe. I just learn how much I din't know. keep them coming.

[@johnbodmer5645]

Great video on setups Joe. Thanks.

[@RRINTHESHOP]

Great demo for the radius cutting. Nice train. Thanks for the shout out.

[@joepie221]

Thanks for scriber !! I should have also mentioned and thanked Ray Caniglia, from KZbin's Ray's Garage, for shipping it to me in Texas so I wouldn't get it taken out of my carry on bag at the airport in California.

[@tomthumb3085]

Another brilliant video, thanks Joe.

[@velez910]

saving this video helped be a whole hell of lot of time thank you joe fantastic work your doing

[@davidnelson2804]

I love all my edge technology items. Lathe tools alignments, indical, tap levels, stops etc.

[@joepie221]

Good stuff.

[@jefferdman5921]

Thanks Joe for a very instructive video!

[@csteimel]

Great video. That took a lot of mystery of how to cut a cam in a part without struggling

[@joepie221]

You can make a simple cam by just taking a full round slug and drilling the axis hole off center if it serves your purpose.

[@wint3rsmith42]

Loads of info well explained as ever. Edge technology stuff is really nice to use

[@joepie221]

It is very well thought out and produced. They deserved a shout out.

[@wallbawden5511]

JOE have been sitting in hospital watching and learning so much i have some lathe experience but not a lot i am a lot out of your videos the way in which you instruct is for me fantastic and i can follow it easily I just bought a lathe an AL336 i like it have instaled it locked it down just geting ready to aline things and start practicing on bit and bobs to start but have landed in hospital no foult of the lath just some bad things with some recovery i front of me so plenty time to catch up on your veidos so thanks from AUSTRALIA CHEERS MATE

[@joepie221]

Best wishes for a speedy recovery.

[@wallbawden5511]

@@joepie221 thanks as i thought i would not get a reply thanks again and keep the tips and tricks coming i'm learning lots will i'm stuck in here bit of luck out this Monday and then with luck might be back turning a week after that cheers mate

[@greybeard3759]

Thanks Joe that was very informative. Glad I bought the pin!

[@joepie221]

Thanks. You'll like it.

[@drbrono]

I used to do the same calculations when I manually programmed cnc lathes with single point tools. Great video.

[@joepie221]

Its a good construction standard to be aware of. Thanks for watching.

[@metalshopwithtroy5755]

Great video joe will help me with my rotary table projects to Thank you

[@jamesdavis8021]

Excellent video..Thank you for your efforts.

[@darrellbauer2464]

Nice tutorial, Joe.

[@billdlv]

That's a good point about the bore in the rotary table vs. the center of rotation of the table. I never considered that.

[@dennisleadbetter7721]

Hi Joe, Trigonometry is very useful in so many trades. It's an interesting phenomena that many have difficulty accepting, where you have two unequal circles that are touching, and you draw a line tangent to both circle circumference, and a second tangent through the point where both circles meet, the two tangent lines interact at the mid point of the first tangent to both circle circumferences. It naturally is the same where the circles are the same size. Regards Dennis.

[@SteveSummers]

Thank you Joe👍. I plan to save this video. I appreciate the time you put into making it.

[@joepie221]

Thanks Steve. That 100 degree temp made it feel extra long.

[@SteveSummers]

@@joepie221 I bet😁. I've been dealing with the same here in KY over the last week or so. Mid to upper 90's and humid. You stand still in the shade and get soaked. It was a pleasure meeting you at the bash👍

[@joepie221]

@@SteveSummers Likewise Steve. I wish I had more time to hang out. if you ever pass through Austin, we should make that happen.

[@SteveSummers]

@@joepie221 Sure thing👍

[@AnthonyJanflone]

Learned a Giant bunch! Thanks Joe!!

[@lancer989998991]

Love your videos Joe! Toolmaker apprentice in my last year working at ford motor company.

[@joepie221]

Thank you. Good luck in your future.

[@bostedtap8399]

Great Geometrics and the dreaded "Trig". Thanks for sharing.

[@joepie221]

I loved geometry in HS. trig, not so much.

[@bostedtap8399]

@@joepie221 To me, they were tactile, I could actually see/draw them!, Unlike Algebra!. Thanks for replying.

[@guillermohernandez3252]

Mr joe thanks for the great time I I’m learning a lot because you are so great teacher

[@joepie221]

Thanks for watching.

[@bigrockcandymountain8397]

I’m a 45yr vet of the building construction trade and have read probably 10,000+ construction diagrams each one containing multiple assemblies and multiple operations to complete task. The main point that came to mind you touched on, breaking down assemblies into single steps in a specific sequence. How do you eat an elephant? One bite at a time!

[@krazziee2000]

very interesting,, thanks for the lesson.

[@vitesseguy]

There are a lot of brilliant people. But very few have your ability to make things clear to the rest of us. Thanks! ps Caught you wearing your ring in the shop... 😁

[@joepie221]

I was, but the machines had yet to be started. Once the demo started, it was on my desk with my watch.

[@theshauny]

Joe Pieczynski maybe the no Jewry in the workshop is a good reminder for the next video (and then the ones like me can show our better half’s why we won’t where Jewry at all not even a engagement ring)

[@snteevveetns]

Whoa! ,magic at 4:45 & 5:40! Great video

[@glennstasse5698]

I love this stuff. It’s just fun and interesting .

[@charles1379]

as a structural engineer, the geometry is not new to me, but you make a reality in its application. Well done for some more great hints for those interested in machining.

[@joepie221]

Thanks. I enjoyed geometry in school. One of my favorite classes.

[@joemiller5110]

Thanks Joe. Like your videos. I did purchase you pin, cant wait to put it to work..

[@joepie221]

Thanks. They do make the setup much easier.

[@angelramos-2005]

So far so good.Ready to try.Thank you.

[@joepie221]

Have fun!

[@outsidescrewball]

Boredom…no good videos to watch today, I watched this video 4 years ago and enjoyed the discussion/demonstration then and NOW…thank you as it is a great lesson

[@ttabbal]

I always get great information from your videos. The down side is that I always want to buy more tools! Vise stop, gauge blocks... :)

[@joepie221]

I just watched the shipping label go on your box. Thanks for the purchase.

[@ttabbal]

@@joepie221 Thanks for the slightly unorthodox shipping notification! I almost made one, but decided I wanted to support your work more directly. Thanks for all you do. As a newer hobby machinist, your knowledge has been invaluable.

[@joepie221]

@@ttabbal You'll get the official e-mail tomorrow. Glad I can help you. Thanks for your support.

[@warrenjones744]

Another useful geometry lesson from "Perfesser Pi", which I might have known had I actually paid attention in school way back in the 70's 🤣

[@mtnphot]

Thanks; another reason for teaching geometry in school.

[@rodneykiemele4721]

Another great video, thanks

[@huibhoogendoorn503]

Great to see theorie bring in to practich.

[@anilvarma808]

Very Good...more on remember forever please

[@fredgenius]

Thanks Joe, another greight video. I'll have to make make myself one of those setup tools - but metric of course!

[@joepie221]

This one was. It measures 25.4mm x 12.7 square with a 19.05 dia shank. Simple. :)

[@fredgenius]

@@joepie221 Lol! I think mine will be smaller, 10mmx5mm square, 6mm shank. :)

[@ronwilken5219]

@@joepie221 hi Joe, how are those pins made? I'm assuming from a solid piece of square stock, turn the pin first and then mill the block to a rectangle. Must waste a huge amount of material. Or are they two pieces, joined together and then ground to perfection. If it's not a "trade secret " can you let us know please? Maybe a demo in the CNC. Thanks, 🇨🇦🍌🥋

[@fredcreer1929]

Another great how to demonstration, but UNLOOSEN !.on the rotary table lock lever.

[@EmmaRitson]

thankyou joe. as always we learned a lot

[@joepie221]

Hi Emma, thanks for stopping by.

[@TheDefeatest]

Great vid. Thank you

[@outsidescrewball]

Great video...lots of lessons

[@joepie221]

Hi Chuck. Thanks for stopping by.

[@ronwilken5219]

Joe, this may already have been asked and answered but the small "flat" on the junction of the two arcs would have been due to the cut on the 0.850" cut being made at a radius of 1.110" instead of 1.100" as the 0.850"+0.250"=1.100" would call for. I don't believe you made the 0.010" cleanup allowance on the 0.650" side. Thanks for the math lessons, bringing back my highschool geometry lessons. At 76 you're stretching my brain matter some. It needs the exercise. Regards from Canada's banana belt. 🤔🇺🇲🦃🇺🇦🕊️🇨🇦🍌👍

[@mikebrewer6213]

It's all in the set up!👍

[@joepie221]

100% agree.

[@christurley391]

Thanks Joe.

[@hervbreault]

Joe, went to your website and saw the pins are sold out. Will you be producing more? Thanks for sharing your knowledge and experience. Helps a noob like me greatly!

[@MichaelLloyd]

Great video! The working model train at the end was amazing!

[@joepie221]

The detail was incredible. I am not surprised it's on display at a museum.

[@ChrisB257]

Always learn something every time Joe - "Mr Trigmaster" ! :) Where the heck do 3 dislikes come from! Thank you Joe :)

[@joepie221]

I would guess Don Bailey and 2 of his guys, but thats only a guess.

[@rtkville]

Very nice Thanks

[@jimgriffin8212]

Very nice I'm very interested in a pin will be ordering next week

[@joepie221]

They are currently in stock. Thanks.

[@donaldyungling3153]

Hello Joe, Thanks for the video. There are not enough rotary table setup videos and yours are the best by far. Next time I am in the shop I will have to check the center of my rotary table in the manner you described. My Yuasa 10" table has a #3 Morse taper that comes to near the top so there isn't the ring as yours have. My thoughts echoed Paul's about testing on the taper and it would be interesting to see if your measurements on the taper match the ring. Food for thought. It is doubtful if there is any measurable difference from the outer part of the spindle nose and the taper. I had checked my Lagun spindle one time and did not see any difference with a .0001" dial indicator.

[@joepie221]

I will dig into that variatioin as time permits, but spinning the table, is by far, the most accurate way to set it up.

[@Teunbaartman1]

Watching a t-shirt exchange in 22.5 degrees👍👍 great vid!

[@joepie221]

After I watched the edited pre post cut, I had to re-shoot that part for clarification. It was worded in a manner that may lead someone astray. Thanks for watching.

[@ryanhenderson4395]

Joe, well done! I absolutely love these detailed setup videos. Do you have any recommendations for a rotary table size and brand for us hobby machinists? What is the best bang for your buck for a 9”x49” mill?

[@bencesarosi7718]

33:10 That thing is amazing!

[@joepie221]

I could have stood there and stared at it for hours. Incredible detail and craftsmanship.

[@Larry1942Will]

Thanks for the RT setup demo. Basic Trig is simple and highly useful. Too bad the schools don't know that. Looks like your compressed air drier isn't working??

[@dansabo4458]

Thank you Joe Pie.

[@joepie221]

You bet

[@swanvalleymachineshop]

Great stuff Joe . there's one of my channel stickers in the mail for you , should take 2-3 weeks . Cheers .

[@joepie221]

Excellent. Look for it on the wall.

[@cmguitar50]

I like.. At 8:47 reminds me of my high school math teacher - he'd use his elbow as the arc center and then swing his arm :)

[@curtisvonepp4335]

Joe if you can use the same Mike setup you use at the Mill at the black board for us heiring impaired guys .🐤😁

[@robertsakowski510]

In Your second method for aligning the RT withe the spindle axis, you assume that the spindle quill has no runout; not a valid assumption on some mills. Here is what I do the align the two axes. I mount a piece of stock at the approximate center of the table and offset the table slightly. Then I mill a cylinder by rotating the RT. You now have a a surface that is absolutely true to the RT axis. Then I use an edge finder or the Indicol to center the milled surface with the mill spindle axis. You now have the two axes aligned regardless of any runout in either.

[@joepie221]

Your technique is a great way to guarantee you get a true surface to line up. And, No assumption on my machine. I know the OD of my mill spindle, at that area, is dead on to the internal taper.

[@37yearsofanythingisenough39]

Excellent way to go about it Robert.

[@jimmydiresta]

Greta stuff ! Thank you

[@joepie221]

Hey Jimmy, Thanks. I appreciate you stopping by.

[@felgate11]

Renishaw Probe - probe top face & 2 sides = job done.

[@joepie221]

I have to disagree. The pin is much faster than a probe would ever be for a setup like this on a manual mill.

[@StraightThread]

Good lesson, Joe! Mind candy for sure. Loved the demo. Thanks for sharing your knowledge. I always enjoy your Master Classes. Was that 100º in the shop or outside? It's been in the cool 100ºs up here in North Texas the past few days. At least it usually cools off to the lower 80s over night. After sixty-years, I've almost acclimated, but only because of air-conditioning. :D

[@joepie221]

100 in the shop.

[@stumccabe]

Some fast costume changes there!

[@CJ-ty8sv]

Joe, another great video! Question though, wouldn't much of the flat left at the end of the part where the two radii are tangent be related to the 10thou stock left for clean up pass?

[@joepie221]

Yes. On parts that are critical, make extra stock allowance at the very beginning and machine the entire profile. Any deviation in squareness or cutter diameter will show up as a flat.

[@TheTobster54]

A+++++ excellent

[@tracylemme1375]

Boy Joe. You sure are smart.

[@joepie221]

Thank you.

[@frase1234]

Aussie Flag on ya white board... Woohoo - G'Day from Melbourne Australia

[@at0mix197]

I like large "round features"

[@PaulSteMarie]

By the way, I would love to see a video showing how you manufacture those little offset gizmos.

[@joepie221]

They are very precision and tougher to make than they appear. Start life as a 12' long bar of 1 1/2" diameter 303 stainless. I strive to guarantee the position and offset is kept to .0005 position and size. Every one is checked 100% during machining .

[@PaulSteMarie]

@@joepie221 That's what makes it so interesting! There's something absolutely beautiful about precision work. I also watch Edge Precision and Suburban Tool videos.

[@larryexact9687]

I like the T-Shirt trick most.

[@joepie221]

It was hard to splice in, but that segment was actually shot the next day.

[@EddyFreddyful]

Joe π, Thanks for all your lessons! Is the rectangular portion of your pin essential? I have a minimill with a max capacity of only 3/8 inch. It seems I could do the same set-up using just a 3/8 inch pin and a stack of gauge blocks. Your flat surface would make it easier, but does it make it more accurate? Thanks.

[@joepie221]

The shape of the head on this pin assures you have a flat registration surface on center, all 4 ways, at a set distance. I imagine a pin would get you by, but you may loose some utility along the way if you needed multiple square references for setup. Having an offset surface to register from allows for setup without moving anything. A full round pin would force some movement if your setup needed something less than the radius of the pin you selected.

[@PaulSteMarie]

Seems to me that if the bore of the table is it not in line with the axis of rotation, you've got a pretty serious problem with that table, and it needs to be either fixed or scrapped. In this case I wonder if disengaging the worm gear introduced some slop into the table itself. Another thing I noticed is that you're indicating in the top edge of the bore, not down in the Morse taper in the first procedure. Likewise, in the second procedure you're indicating on the outside of the spindle nose, as opposed to a pin held in the collet. Are those ground and true surfaces?

[@joepie221]

The mill spindle is, but the table ring needs to be double checked. But you are correct, a pin in a collet would get you the most accurate representation of concentric.

[@IHateYoutubeHandles615]

@@joepie221 I was wondering about this as well. I'm only an amateur so sometimes the language escapes me, but it seems to me that in the second method, the hole in the spindle for the tool could be eccentric to the OD of the spindle and you could be measuring that, not the table. Of course, it if was eccentric like that, it seems like any tool would be maching an oval rather than a circle?

[@brianevans1946]

Hey how did you change shirts so quick..??

[@joepie221]

Trade secret. ( editing )

[@justtim9767]

Joe, my head stared to hurt.