Home Shop Machinists Podcast – Episode 11 – Shop of the Future

In this episode Max and Justin decide to prognosticate about what the home machining shop of the future looks like.  50 or 100 years down the road is it going to be full of modified CNC machines, or will the electronics on those machines render them scrap and only the old school manual machines still be in use?  We talk about

  • Max’s sea foam green stamping fixture
  • Max is working on a new TV stand for the house
  • Justin finished his tailstock tap and die holder
  • A new mill drill for Justin’s shop.  Did he make the Rong choice?
  • The Dodge Omni and Shelby GLHS
  • Do all VW owners hate Honda owners?
  • Max’s hatred for all things Digifant
  • Laser bandsaws
  • Motivated millennials: will they keep CNC machines going?
  • Are we living in an golden era for home shop machining?
  • Will the cheap tooling end?

All that and much much more!

You can listen to it directly here:

or you can download it directly.

Subscribe in iTunes (and please rate us!): https://itunes.apple.com/ca/podcast/home-shop-machinists-podcast/id1180854521

Max’s website: The Joy of Precision and also his Youtube channel:  https://www.youtube.com/channel/UCdMt_havo3BxZJscvRCOGcw Max’s Instagram: https://www.instagram.com/joyofprecision/

Justin’s Youtube channel: https://www.youtube.com/thecogwheel  Justin’s Instagram: https://www.instagram.com/thecogwheel/

Home Shop Machinists Podcast – Episode 10 – Practitioner of the Mechanical Arts

In this episode Max and Justin talk with the great Robin Renzetti, Practitioner of the Mechanical Arts (Robin – we hope you have that on your business card!).  We talk about:

  • Robin’s gifted ability of machining and all things mechanical
  • Robin’s resume.  A model of a helicopter rotor head.  And yes, he made very piece in his spare time!
  • A little bit about Robin’s shop
  • Foundations of Mechanical Accuracy
  • Turcite and gluing it with Loctite Black Max 380
  • Other Loctite products
  • Moore pattern scraping
  • Scraper sharpening
  • Spindle design & bearings
  • Import collet tricks
  • ER vs 5C style collets on work holding – make sure when using ER collets as work holding collets the stock sticks through the entire collet!
  • Pot collet runout and Robin’s pot collet setup:
  • Jaw chuck repeatability
  • Jacobs taper size
  • # screw size formula
  • Mapp gas turbo torch and silver soldering
  • Lathe file body oil
  • HSS belt sander backer

All that and much more for over 2 hours of listening!

You can listen to it directly here:

or you can download it directly.

Many thanks goes out to Robin for taking the time to be on the show.  Be sure to give him a follow on Instagram: https://www.instagram.com/robinrenzetti/ and also subscribe on Youtube: https://www.youtube.com/user/ROBRENZ

Subscribe in iTunes (and please rate us!): https://itunes.apple.com/ca/podcast/home-shop-machinists-podcast/id1180854521

Max’s website: The Joy of Precision and also his Youtube channel:  https://www.youtube.com/channel/UCdMt_havo3BxZJscvRCOGcw Max’s Instagram: https://www.instagram.com/joyofprecision/

Justin’s Youtube channel: https://www.youtube.com/thecogwheel  Justin’s Instagram: https://www.instagram.com/thecogwheel/

Home Shop Machinists Podcast – Episode 9 – We Are Finished!

In this episode Max and Justin talk about finishing and both agree that they are terrible at actually finishing projects.  In fact, it is amazing that this podcast is still being recorded and not sitting on a shelf somewhere collecting dust waiting for completion.  It did actually sit for about a week until Justin managed to finish the editing!  In this episode:

You can listen to it directly here:

or you can download it directly.

Subscribe in iTunes (and please rate us!): https://itunes.apple.com/ca/podcast/home-shop-machinists-podcast/id1180854521

Max’s website: The Joy of Precision and also his Youtube channel:  https://www.youtube.com/channel/UCdMt_havo3BxZJscvRCOGcw Max’s Instagram: https://www.instagram.com/joyofprecision/

Justin’s Youtube channel: https://www.youtube.com/thecogwheel  Justin’s Instagram: https://www.instagram.com/thecogwheel/

Shop Made Quick Change Toolpost

A few weeks ago now I finished a quick change toolpost for the Schaublin.

The design is based on Andy Lofquist’s MLA-23 toolpost.  Andy is the man behind the wonderful Metal Lathe Accessories kits (http://www.statecollegecentral.com/metallathe/).  While I’ve never ordered any kits from Andy, I’m told that they are very high quality and are exceptionally thought out.

After quickly considering a Tripan toolpost and changing my mind after I saw the prices on those I ordered a set of drawings for the MLA-23 toolpost.  The original design is for 9″-12″ swing lathes.  The Schaublin is an 8″ swing lathe.  After drawing up the original toolpost in Fusion and drawing up the Schaublin cross slide it was evident that it was too big.  I decided to design a scaled down version, making some changes along the way.

The largest change is in the dovetail size and the shape of the body itself.  I wanted something that would match the Schaublin’s size, but also look, so I manufactured the body out of round material instead of square.  The toolpost is optimized for 1/4″ HSS tools, but 5/16″ will fit.

The internal workings are that of the MLA-23 toolpost.  The design is exceptionally rigid and works very well.  It is also a wonderfully simple in design.  Part of the reason I really like this design is for its simplicity.  I believe the best design is one that doesn’t allow you to take anything away.  This design, in my opinion, is one of those designs.

Some people don’t like that the toolpost doesn’t repeat in angle position – that is once you loosen the locking handle you completely loose the rotational position of the toolpost.  This is a downfall of the design if you truly need rotational position repeatability.  When I work in the shop I’m constantly moving the toolpost around to allow for tool clearance.  So much so that I made a handle for my Aloris clone on my 10×18 lathe a number of months ago.  I do have provisions in the design to allow for graduations on the base to allow for visual rotational positioning.  We’ll see if I add it.

The build was interesting and fun.  I learned a number of things along the way including how to cut dovetails on the shaper.  It took a bit of time, but it reaffirmed the very useful nature of having a shaper in the shop.  Instead of waiting for a dovetail cutter I could grind up a simple tool and cut nice dovetails, at any angle, and get a super finish.  I’m told you can build the entire toolpost with a lathe, but there is a fair bit of milling work so even a mini mill would be a huge help.

Since the design borrows heavily from Andy’s design I don’t want to release drawings.  What I’m planning on doing is forwarding a set of drawings to Andy to include with his prints if he is interested.  So if you want to build the smaller version, which is a perfect size for the mini lathe, send me an email and I’ll try to get you a set of drawings.

I made a build video of the entire toolpost in montage style format as well.

 

Home Shop Machinists Podcast – Episode 8 – G’Day Mate

In this episode Max and Justin take a trip down under, and back to the future, and  talk with John Creasey, an avid home shop machinist from Australia.  As usual the discussion topics vary considerably, but we do talk a bit of machining.  In this episode you’ll find:

  • John and Justin get a little teary eyed over the Queen.  Don’t worry – we don’t break out in God Save the Queen
  • Australian politics: the laws of mathematics are no match for the Australian government!
  • John lets us know he has 2 Myfords.  His first was purchased by his father when he was 16.  Let’s here it for great Dads!
  • Electric cars, VW Vanagons, and taking things apart when we were kids
  • We talk about scouting, ripping out hard drives, and rip apart day
  • Stefan is mentioned numerous times
  • Did Max forget to empty his shop dehumidifier?
  • Arduinos in the home shop: Edu Puertas (stop motion) https://www.youtube.com/channel/UCdEtDnvVeoqlKzpquM7IsNA and the Arduino lead screw https://www.youtube.com/watch?v=BaBK9teKUaA

All that and much much more.

You can listen to it directly here:

or you can download it directly.

Subscribe in iTunes (and please rate us!): https://itunes.apple.com/ca/podcast/home-shop-machinists-podcast/id1180854521

Many many thanks goes to John for getting up early to join us.  John’s Instagram: https://www.instagram.com/creaseyjohn/.  Be sure to subscribe to John’s Youtube channel (check you his amazing chess set build): https://www.youtube.com/channel/UCwfr0K9NJKIgxOqYr5TTeJg.  John also put together the Youtube Machinists Facebook group.

Max’s website: The Joy of Precision and also his Youtube channel:  https://www.youtube.com/channel/UCdMt_havo3BxZJscvRCOGcw Max’s Instagram: https://www.instagram.com/joyofprecision/

Justin’s Youtube channel: https://www.youtube.com/thecogwheel  Justin’s Instagram: https://www.instagram.com/thecogwheel/

Schaublin 102 is Making Chips!

Although I’ve talked about it with Max on the podcast, I’ve never announced on the blog that I picked up a made in Switzerland Schaublin 102.  102 is the turning radius in millimeters (about 4 inches).  The lathe was in pieces, but in very workable condition.  I dragged it home and it sat for a few months until I found the time to get to working on it.

This week I finally managed to get the 102 making chips.  It took some work mostly in the drive area.  I didn’t have access to the proper voltage to drive the existing motor so I decided to replace the original Schaublin motor with new 3/4 HP Baldor that I picked up a year ago for $50.  I also wanted to keep the mechanical variable speed drive working.  I could have got the old motor rewound, and I might do that some day, but the $800 that I was quoted was a bit rich.

After modelling up the existing motor in Fusion I designed up a pulley to fit the Baldor, spacers to place the new motor in the same location as the old one and a motor mounting plate.  I used old school methods to make up a plate to mount the VFD and associated electrical components.

I made a montage type video of all the work:

I was pretty happy with how it turned out.  Here is an animated gif showing a test cut that I did with the lathe:

Aside from making up the required parts, I spent a fair bit of time cleaning out the bed, cross slide, tailstock and the interesting air – oil lubricating unit for the spindle bearings.  I also have several hours fishing the air – oil lubrication lines back into place in the headstock.

I’ve never used a plain turning lathe before, and quite frankly until I did I thought they were a bit of a joke.  In the past no carriage or leadscrew caused me to immediately write off plain turning lathes as useless machines.  Nothing could be further from the truth.  In fact, as I used my import lathe more (which has a carriage and leadscrew) I realized that I do 80% of my work without such features.  If you have the chance to pickup a plain turning lathe in good condition, jump at it!   Many people devalue such machines and as such you can sometimes get a very good deal on a lathe that is exceptionally capable – and a joy to use.

Next up is a proper toolpost for the lathe, a backing plate for a Buck 6 jaw chuck I picked up, and probably a faceplate.  That is unless I manage to pick this stuff up used somewhere.  I really don’t count on that happening though.  Parts and associated tooling for Schaublins usually demand high prices.

 

 

Home Shop Machinists Podcast – Episode 7 – Work Holding

In a first for us we manage to get an episode recorded, edited, and posted in about 2 weeks!  Don’t worry we didn’t skimp on the quantity of the recording – this episode is a long as the rest of them (note nothing was said about quality!). In this episode we talk about work holding and tool holding in general.  Apologies for our voices – we both were recovering from colds.  Highlights include:

    • Max gets his turret finished just in time for Emma’s tool making competition: https://www.youtube.com/watch?v=xe3ACUzET7Y Check out the pile of chips on the watchmaker’s lathe:
    • Justin is inching (what is the metric equivalent?) towards getting the Schaublin 102 up and running.
    • Someone opens a beverage.  Identify the time and send Justin an email: justin@thecogwheel.net  to claim your prize!
    • Justin is recording in the middle of a terrible thunderstorm.
    • 2 Jaw independent chuck?  We talk about one:
    • Justin and Max are big fans of ER collets.  Maritool is a great source for production quality stuff at reasonable prices.
    • Stefan Gotteswinter gets his mention.
    • Use your 3D printer, or a 3D printing service to make soft jaws for your vise!  Or a fixture setup for your face plate.
    • Clamping nuts – we don’t know what they are called but Max made up a set of them.  Identify them, send Justin and email justin@thecogwheel.net and claim your prize!
    • Max thinks Justin should build some die holders with driving squares in them like these ones:

All that and much much more.

You can listen to it directly here:

or you can download it directly.

Subscribe in iTunes (and please rate us!): https://itunes.apple.com/ca/podcast/home-shop-machinists-podcast/id1180854521

Max’s website: The Joy of Precision and also his Youtube channel:  https://www.youtube.com/channel/UCdMt_havo3BxZJscvRCOGcw Max’s Instagram: https://www.instagram.com/joyofprecision/

Justin’s Youtube channel: https://www.youtube.com/thecogwheel  Justin’s Instagram: https://www.instagram.com/thecogwheel/