Balls - 3 Ways

[@MattysWorkshop]

Gday Preso, great ideas there, the block of wood I think would be the easiest to setup, very generous of Bart to send you a nice collection of cutters, great episode mate, cheers

[@Preso58]

Thanks Matty. Bart was very generous. My collection of milling cutters would normally fit into a small lunchbox! Regards, Mark

[@RalfyCustoms]

Matty 👍

[@myfordboy]

Rob Roy was the first model engineering model I made in 1990.

[@Preso58]

I think Rob Roy is a good beginners engine. I built the Tich instead but it is somewhat harder to build if you want to include the Walschearts valve gear. So many tiny linkages. Regards, Mark

[@RalfyCustoms]

Balls 😂 nicely done Preso thank you for sharing

[@outsidescrewball]

Great discussion/instruction…years ago I sold “Screwyballs “…Multi Axis Working Holding Device…

[@Preso58]

I know. I watched your video trying to pick up some tips. I had to go back a way but I found it eventually. Thanks for the inspiration. Regards, Mark

[@Si-Al-Ti]

20:58 ‘Atoma’ brand diamond plates doesn’t have the hexagonal pattern in them, they’re quite flat and very durable. I have a few of them and would recommend them to anyone looking to buy their first set of “full size” diamond stones.

[@624Dudley]

Good humor 😄!

[@modellingmark]

As always, a very interesting and informative video. However, I'm most distressed that you're considering not giving us a video series on building the 10H. I for one, would love to see how you approach that model. Looking forward to the Rob Roy !

[@Preso58]

Thanks. It seems the fans are wanting to see the 10H build. I will see what I can do. Regards, Mark

[@bartharkemametalworks2299]

Your very welcome Mark. It's nice to support your work and channel to keep those spindles turning.

[@Preso58]

Thanks Bart. I am working on a return gift for you. Stay tuned! Regards, Mark

[@WayneCook306]

Thank you, Mark I have now learnt something else today, I do not think it would be boring watching the steam engine build.👍👍👍👍👍👍

[@Preso58]

Message received. It's now on the agenda. Regards, Mark

[@philipbarrett3151]

+1 - Blondihacks series of steam engine builds are super interesting

[@ralphpavero7760]

Great information thank you

[@camillosteuss]

Nice balls! Best regards! Steuss

[@Radiotexas]

One of your best mate!!! Very ballsy!

[@jonsworkshop]

Ohhh, so much innuendo lol. I was just glad to see my roller drawers aren't the only ones on the planet held in place by cobwebs and swarf....good on you Mark, workshops are for making a mess in👍😁

[@Preso58]

Who has time for sweeping? Regards, Mark

[@alanremington8500]

Nice one !!

[@MicksWorkshop]

Thanks for the shout out Mark! It's great that you show several techniques for making them. I'm going to have to pick up a selection of larger balls. I can see how they could come in handy.

[@Preso58]

No problems Mick. I hope you get some new subscribers. Regards, Mark

[@MicksWorkshop]

@@Preso58 I the very short time since you put it up I've added almost 40! Thanks again. 😊

[@Preso58]

@@MicksWorkshop That's great! I like the notion that the humble sticker exchange can benefit all of the KZbin creator community. Regards, Mark

[@geoffrobinson5584]

I for one would love to see both made on you tube. The more I watch the more I learn. Thanks for your videos, always informative and keep them coming!

[@Preso58]

I have been persuaded to do the Stuart engine as a video series but It will be less talking and it will just focus on the machining. I am actually starting on it today. Regards, Mark.

[@Warped65er]

Thx for the vid.

[@johnm840]

Thanks , one of the items on my bucket list. Don't recall who, but he welded a small rod on the ball for a handle to assist placement in the vice. Wood fixture is clever.

[@Preso58]

I have just made an accessory for those ball fixtures and it will be featured in a video coming out shortly. It wasn't my idea and it was sent in by a viewer but it's very clever and it does make it easier to locate the ball and it prevents marring the work when clamping. Regards, Mark

[@RobertBrown-lf8yq]

Thanks Mark 👏👏 Some great tips there mate. Love the calming wildlife closer too 👍 Regards Robert

[@robertwragg9224]

Hi Mark I have made that H10 the other year. Bought it from a machine seller that Bought some old guys workshop. Made some pipes for the inlet and exhaust ,was going to send photos but no option for it.

[@Preso58]

You can send the photos to my email [e-mail] I would be interested in seeing how yours turned out. I had a closer look at the parts today and I was surprised that the cylinder covers were supplied as chunks of steel. I think I will make them from cast iron. Regards, Mark

[@mrc1539]

Mark, I watched all of Joe Pi’s videos on his models and really enjoyed them , would love to see you do some models . I’m fascinated by the set ups that is required to hold some of the parts . I have taken the temper out of some balls and drilled and tapped a thread in them to use on the end of handles but have never tried to harden them again. Was surprised that you would show everyone your balls 😉😂🤣!

[@Preso58]

I have been persuaded to do the 10H series but I will try to concentrate on just the machining and go light on the yakking. Regards, Mark

[@timogross8191]

Yes, links to the stickers is making it easier!

[@Preso58]

Good to know! Regards, Mark

[@flyingshards595]

Always enjoy your videos, sir! Thanks!

[@wallbawden5511]

thanks for the tips on using the ball bearings for work holding and how to grind them and achieve same results using different ways to do such at the end you show the how to use on a bronze part . just a tip for you and others when holding soft parts and lets say polished parts and these are usually a one use but do same but use aluminium balls or even plastic the later be careful as there hard to get tight if your milling parts cheers all

[@johnsaluk4689]

Watching a steam engine or locomotive come to life would be very enjoyable 😊

[@Preso58]

It appears that there is some considerable interest which I hadn't anticipated. I have decided to do a sort of super mix of the Stuart build. I will try to go light on the detail but still show the important setups. Regards, Mark

[@dagorithe]

17:39 hey, that vice looks familiar. What a nice looking tool. Hehe

[@Preso58]

I really like that vice. I just push it to the back of the table when I don't need it or I can slide it out of the clamp or I can remove the clamp completely if I really need the table space for big flat items but most of the time it works for all the small parts that I want to drill. Regards, Mark

[@tates11]

You dont always need a spindexer on a surface grinder, typically a vee block is used which can also be used on a belt grinder. There is no real need for a concave grind, it reduces the contact area on the moving jaw. Grinding the flat is to increase the surface area on the moving jaw to prevent damage to the jaw and transfer to future parts. If you want to leave the ball round it can be sat in a small piece of tube, nut or on a washer to protect the moving jaw. Two washers will also protect the part and still swivel to align Can the flat on the ball sit on the top of a machinist jack to give a point contact to the part? If the jack has a vee or two in the top then the ball can sit in them and give a self aligning pivoting pad for the part to sit on. Using a full ball on a washer will do the same.

[@Preso58]

All good points. I found that the concave grind was really just a way of ensuring that it wasn't convex which would be bad. Regards, Mark

[@MASI_forging]

Such great idea 👏👏

[@mrimmortal1579]

Nice balls, Mark! I had to tell my wife that you were talking to her at the end, there. I swear, she has the maturity level of a thirteen year old boy sometimes. Maybe that’s why her and I get along, what with similar senses of humor and whatnot. As for the projects, film them all! I imagine that no matter how many parts your steam engine and/or locomotive builds take, the overwhelming majority of us will be here for every last minute of it. Especially if you show us your balls again! >snicker< Ok, I’ll go out in the hallway with my wife until class is over now.

[@Preso58]

When I was teaching, there were certain key words that I would strive to avoid because the reaction was always the same. 😁 I am going to do the Stuart 8H as a build series since it seems that there is considerable interest. I will probably just concentrate on the machining and finishing and less on the setups and reasoning. Starting today in fact. Regards, Mark

[@mrimmortal1579]

@@Preso58 Fantastic! Anything you’re willing to film, we’re willing to watch. You are a great teacher, Mark. Your videos are always entertaining and informative. Have a great day! (I’m assuming it’s daytime there. Just getting dark here)

[@TheAyrCaveShop]

Gday Mark, Bart fixed you up good 👍and nice set of balls 😁 ATB....Cheers.....

[@Preso58]

Thanks Dean. Yes, Bart has been very generous. I shall have to send him some Vegemite! 😁 Regards, Mark

[@jimdean7335]

Thanks Mark, those are some impressive balls. I also learned why birds have wings, they don’t always walk so good.

[@Preso58]

Yes. that poor bird must have been quite embarrassed. We watched the clip over and over and you could see it tripping over a stick hidden in the grass. 😁 Regards, Mark

[@andrewdolinskiatcarpathian]

Hi Mark. I have a d bit grinder. I now need to get some hardened balls. What a great tip. 👏👏👍😀 Oh, and PLEASE film the 10H build. 🙏

[@Preso58]

Thanks, and apparently the 10H is now on the agenda. I hadn't anticipated that it would be popular. Regards, Mark

[@andrewdolinskiatcarpathian]

@@Preso58 Excellent news 👏👏

[@osgeld]

Much smoother than I expected

[@TedRoza]

G'day Mark. Excellent presentation with your Balls, & the various ways to machine them with a flat. Keep up the good work

[@bkoholliston]

Lovely video!

[@thehobbymachinistnz]

Lots of good tip there Mark. Thank you.

[@Preso58]

I wish I had made those a long time ago. Simple and effective. Regards, Mark

[@rogertaylor1589]

As always, great presentation teach

[@tomcren59]

Don't think that we wouldn't like to see you build the Stuart model.

[@Preso58]

Fair enough. It is now on the to do list. Regards, Mark

[@bmalovic]

You can hold that ball in a lathe, after grinding on a belt, and make small hollow in the middle with cuting wheel or sanding drum on a dremel or something simillar. That hollow do not need to be precise, just to be under the edge surface. Then go to diamond stone. And you will get the edge only contact.

[@wibblywobblyidiotvision]

Nice one, Mark. I like the improvised collet, that could come in very handy.

[@Preso58]

Low tech, but it works. Regards, Mark

[@mgmoody42]

@3:30 No we don't get bored of it. Post video as you build, please!

[@Preso58]

Coming up! Regards, Mark

[@jaybailey3518]

I made mine using a ceramic insert on the lathe, the ball was stable in the first groove in the chuck jaws and I was also able the put a relief in the center area of the ball. I had to take light cuts at a slow speed. Very interesting ideas, thank you.

[@Preso58]

I have never used ceramic inserts before. Not sure if my lathe is rigid enough to make them work. I was considering using stainless steel balls which are available in large sizes and facing them as you have suggested. Regards, Mark

[@Lesfac]

Hi Mark, I enjoyed the video as always. I think my method would be to have a small block of steel with a drilled hole part way through to drop the ball into. The unmachined ball would seat on the drill point. I might even epoxy the ball into the block. You could make it on the lathe or milling machine.

[@Preso58]

Good idea. As it turned out, Mick from Mick's workshop reviewed a tool which is similar to your idea but it uses two plates with the ball held in between using springs and pins. kzbin.info/www/bejne/hGqZeJV6brSKf5I Regards, Mark

[@AmateurRedneckWorkshop]

That was interesting. I would like to add you could also use a surface grinder if you have one. Thanks for the video keep on keeping on.

[@Preso58]

I wish I had a surface grinder, and a shaper. Sigh.... One day. Regards, Mark

[@Rustinox]

Very nice gifts you received there. You're spoiled, Preso. It's a bit like an early Xmas :)

[@Preso58]

I'll never say no to nice sharp tooling. Regards, Mark

[@dizzolve]

3:15 wow that was expensive for back then ......... seems to me. those US Dollars? Love seeing something from back then though being not as old as you are but old enough =D

[@Preso58]

The receipt was in Australian dollars. Being out here in the colonies, we pay over the top prices for everything. Most of the Stuart kits were imported from the UK and the retailers just passed on the exchange rates and the shipping charges and then took their margin as well. There is also very little competition amongst vendors. Back in the 80's there were only a handful of companies selling model engineering products. Now there are even less. Regards, Mark

[@eric500k2]

Hi Mark, thanks for this excellent demonstration. Did you also consider putting small neodymium magnets on the flat side, just a hair below the surface. I imagine that that would make positioning them much easier.

[@Preso58]

It would but it would also be a bit of a nightmare with chips getting stuck to the surfaces. I did consider just magnetising them but decided against it. Regards, Mark

[@joshclark44]

You can't just tease a big project like that and be all "yeah I'm gunna do it, but I'm not going to show you" 😂 I don't care if it's a long project. That's the same reason I watch blondihacks. Just gotta space it out with one or two other projects, so it's not like 20 videos in a row, I think. I would love to see you make a steam engine!

[@Preso58]

OK, it seems there is support for making a series out of it. I will be starting shortly. Regards, Mark

[@Tinman97301]

Please show the steam engine build. Some of my favorite builds

[@Preso58]

I may do a sort of accelerated build sequence on the Stuart 10H. Regards, Mark

[@davidtaylor6124]

Cool! I could have used one of them today while squaring up some very rough cast iron for axleboxes. I really hope you make a series doing the Rob Roy, I'd love to see how you get all the stuff around the wheels and rods accurate. I had 4 accurate axlesboxes 2 weeks ago (ie they all had the same error!), then I misread a drawing, didn't measure the old ones, and didn't use common sense so now I have to make another two which won't have the same error so no doubt some eccentric bushes are on the way too.

[@Preso58]

I don't know how I have gone without these tools for so long. I thought it would be difficult to buy the balls in the larger sizes but they are quite easily found on Ebay. I made the axle boxes for my Conway (by Martin Evans) from steel and then used white metal (babbit) as the bearing surface. If you can buy the white metal it's easy to just pour it in to the oversize or misshapen bore. It's nice stuff to work with. Regards, Mark

[@B1D2-Tugs]

Would like it if you could post a build series of the 10H on KZbin.

[@Preso58]

Will do! Regards, Mark

[@generessler6282]

Aaaaach! Noooo! I for one would not be bored with an engine series! The glow engine project was my absolute favorite. I've watched both Blondie Hacks and Joe Pie build multiple engines, never missing an episode. Pleeeese! All the other steam engines have been PM Research. A different kit would be very interesting.

[@Preso58]

OK. I shall see what I can do. Regards, Mark

[@ccbproductsmulti-bendaustr3200]

👍👌

[@billdoodson4232]

I like the idea of these, but I'm stumped, having neither a Dbit or belt gringder. Its going to be months before the surface grinder is working. I do however have some lumps of hardwood. 😊

[@davidtaylor6124]

Angle grinder?

[@davidtaylor6124]

Angle grinder?

[@Preso58]

I did see that there were stainless steel balls in large sizes. These may be suitable for facing in the lathe. It's probably not a problem that they are unhardened. Regards, Mark

[@jrkorman]

I'll add my opinion to at least one other I'm sure - I'd love to see you take a swing at that Stuart engine. Take your time and hit the highlights at least. Please! :😃

[@Preso58]

Will do! Regards, Mark

[@braddobson2060]

Is the point loading of the ball on a casting not a concern

[@Preso58]

It could be, especially as the wall thickness on the casting gets thinner. However, with bronze you don't need a lot of tool pressure and I am guessing the cuts will be very light. Like Robin Renzetti says, everything is made of rubber! Regards, Mark

[@dennisbjones]

I would have thought that leaving them spherical would ensure that the clamping force remains perpendicular to the fixed jaw (probably only good for holding relatively flat stock for blocking out). In the case of the semi-cylindrical brass stock in the video, wouldn't a ground pin be appropriate if positioned vertically against the moving jaw? I'm just thinking that the clamping forces may become oblique to the fixed jaw (racking of the moving jaw whilst tightening for example). It probably shows that I'm not a machinist but just thinking back to vectors and forces lectures about a million years ago at QIT.

[@Preso58]

I think the idea of adding the flat is just to make it easier to position the ball during the tightening process. It doesn't need to be very large in diameter. Regards, Mark

[@JaakkoF]

@@Preso58 And adding the flat also ensures you will not ding your vice jaws with the point contact.

[@machinists-shortcuts]

​@@JaakkoFthat's exactly what it's for.

[@apollorobb]

Pretty tough mate to put your balls on the Linisher

[@Preso58]

Enough to make your eyes water for sure. Regards, Mark

[@philipbarrett3151]

Build the Rob Roy!

[@Preso58]

I will not be able to leave it alone. It will make a nice little workhorse for my home track. My two other locomotives are "showcase" models and I don't want to get them dirty. Regards, Mark

[@zachaliles]

Is it just me or was the head of your d bit grinder moving a lot in relation to the wheel while you were spinning it?

[@Preso58]

Yes it was loose-ish. I did notice it and I could also hear that it wasn't grinding consistently. It turned out the two locking screws on the dovetail slide were not locked. Regards, Mark

[@zachaliles]

​@@Preso58nice balls by the way.

[@flyerphil7708]

And for the man who can’t wait for his balls to drop through the letter box, you can always turn up a cone and part it off.😂

[@flyerphil7708]

Keep up the good work Mark . We all look forward to your videos.

[@robertwalker7457]

Mate, I would not care how many episodes it took to build those engines I would watch. The model aircraft engine series was out standing and missed. Anyway now that you have made those balls you might as well use them.

[@Preso58]

I have been persuaded to build the Stuart 8H kit and make a build series for KZbin. I am actually starting today. I also have the plans for the "Crusader" which is the fully fabricated version of the Titan model aircraft engine. I think that will be a future build series too. Regards, Mark

[@robertwalker7457]

@@Preso58 Looking forward to both.

[@mikegLXIVMM]

6:1`1 Uh.....that's OK, I'm good.

[@petepeterson4540]

put it together on youtube

[@Preso58]

Maybe. I may do a sort of mashup/director's cut. Regards, Mark

[@stevemurnane1892]

That young magpie is like all the kids these days. Won't leave home, and expects to be always fed by mum and dad!

[@Preso58]

As it turns out, the parents will start to ignore the cries for food and if the youngster won't move on the parents will start to physically assault the reluctant juvenile. They don't really hurt it but we have watched both parents holding the juvenile down on it's back and they will nip at the legs to make sure it understands that it's time to find it's own territory! Regards, Mark

[@rrabbit1960]

FIRST!

[@Siskiyous6]

Second first

[@kailibxanitoez3528]

I'm heart broken 😢😢

[@Preso58]

About the engine build? Evidently it is now being requested so maybe I will include a few episodes of the Stuart 10H. Regards, Mark

[@kailibxanitoez3528]

@@Preso58 your awesome as always lol 😀

[@kailibxanitoez3528]

@@Preso58 Id definitely watch every single one

[@ninetwenty]

No steam please. There are many channels for steam builds. You are unique don't join the mob. Thanks

[@BillySugger1965]

I think Mark should follow whatever course in engineering that takes his fancy. You are free to watch or not.

[@Preso58]

There have been a lot of requests to document the Stuart build. I don't want to make it a 20 part build series. It just makes the project 5 time longer to get through but I will do a sort of director's cut version. Gotta try to please the crowd. Regards, Mark

[@kailibxanitoez3528]

Don't show us the kid and then not show us step by step videos of you making it that just sucks

[@Preso58]

OK. Message received. I shall see what I can do. Regards, Mark