Finish aluminium with a lathe shear tool.

We take another look at a metal lathe shear tool.
Camera: Nikon L820

[@MakinSumthinFromNuthin]

Just watched your vid again for a better view of the grind angles. I did notice however my name was engraved on that HSS tool bit...I think I would like it back :-)

[@bluehandsvideo]

Since I'm still pretty much a newbie to machining, it's no surprise I've never seen a shear tool or it's use. Great education!! Thanks!!!! Mike

[@johnbazaar8440]

I can't wait to try this on my lathe. It's currently apart for repairs but should be back together this weekend. Thanks John

[@swarfrat311]

Rob, Thanks for the information on the shearing tool. It sure does a great job! Thanks for the video. Have a good one! Dave

[@mechanical1955]

Hi That is great , Shear tools are not that well known but for difficult materials to finish they are great , nice one , passing on these tricks of the trade are invaluable , Keep up the good work

[@MakinSumthinFromNuthin]

Another extremely nice finish, time to hit the grinder and give it a go :)

[@ChrisB257]

Nice demo - I can see why Keld made his comment - he casts a lot from his beer cans! I have been meaning to grind a shear tool - really must play with that. So much to do - so little time. :)

[@AmateurRedneckWorkshop]

G'day mate. Great video. I am glad to see you using some of your own cast aluminum. When I finish my current project I am going to cast some myself in the method you have shown. Thanks for the video.

[@jimmilne19]

Very informative video. I'm off to grind a bit to see if I can make it work. Thanks for sharing.

[@emgiwoodworks]

Hi Rob, That's a nice finish for sure. Looks like I'll have to make one of these as well. Meanwhile I have cast my first pieces of round stock, one of them is 36mm in diameter with a usable length of 29cm. I had to destroy the mold to get it out though. The furnace is still not finished but I'm close. One other "lesson learnt": The quality of the cast is highly dependent on what material you use to melt. That is the main reason for staying away from aluminium foil and food containers, at least if you want to process the material in a lathe. Stuff that has been cast before (quote) is harder to get but yields far better results.

[@Xynudu]

Leo Gijssel Hi Leo. I use previously cast or extruded alloy, and it machines OK. Extrusions are generally softer and come up nicer, but for gears I use harder stuff. I've never tried melting food containers, but beer cans seem to work well - Keld Sorensen has a few videos on his efforts with this medium. Cheers Rob

[@tonycstech]

Thanks. i learned allot from you.

[@Xynudu]

Thanks for watching! Cheers Rob

[@charlesmitchard246]

the shear tool is the bees knees for finishing I use it for steel and aluminium but stainless is a bit of a problem.

[@keldsor]

Hi Rob ! Nice trick there ... especially when you make your own round stock ... as WE do ;-)) I took your idea with the tube as a mould a littl further - show in a video soon - still too cold here in Denmark for working outside ;-(( Thx for sharing !

[@Xynudu]

Keld Sørensen I'm waiting to see your videos Keld. Glad to see your OK. I was a bit worried, you've been off the radar for a while. Damn glad we don't have that snow stuff here. Cheers from down under. Rob

[@The_Conspiracy_Analyst]

xynudu I'm thankful we don't have to deal with those god awful drop bears!

[@Xynudu]

Slappy Fistwad Yep, they can ruin your day.

[@keldsor]

xynudu According to the calendar we should have spring - OK, we have no snow right now, but it's cold and windy, so 1 hour outside is making you stiff and very freezing, In such a situation I'll rather think of the stock of aluminum and take a beer (in cans) and stay inside ;-))

[@Xynudu]

Keld Sørensen A wise decision Keld. Plenty of time for play later. Have a few for me. Rob

[@xmrrush8355]

I've been pouring my own round stock too its really not that difficult to do and I also enjoy producing my own stuff

[@tonycstech]

What do you do to minimize pores on the aluminum you pour into tubes ? Have you tried hotter or colder melting temperatures ? I wonder what works best.

[@Xynudu]

Use quality aluminium. Preheat the mold tubes. Pour the aluminium at the lowest melt temperature possible. The higher the temperature, the more it will gas. Let the poured mold cool slowly. I have virtually no porosity problems doing this and do not use any degassing agent or flux. Cheers Rob

[@rljzathras]

I'm wondering if the tool was made with a curved vertical face if it would also work well for facing...

[@Xynudu]

Ray Jones You are probably right. Apparently that works well for facing. I haven't tried it it yet. Rob

[@holmes230536]

That was an interesting video, something I was unaware of, I do use a similar opp when I'm machining Acrylic in the lathe, I use a straight across zero top rake and set it so that the rear end of the toolbit gives a shear cut , but I will try the shiver system next time, Your lathe, can you reveal the manufacturer, its nice and quiet, would it be a Myford?, Edmund

[@Xynudu]

+Walter Maisey Hi Walter. My lathe is just a cheap Chinese 10x18. It's belt drive same as a Myford, which makes it very quiet. Cheers Rob

[@250-25x]

If I'm seeing it correctly, there is only 1 edge to grind from a "new" uncut HSS bit then? that actually gives both the needed angles? Thanks again for another great vid.

[@Xynudu]

Two faces to grind. End relief and side relief. Rob

[@danharold3087]

The wood lathe version of the shear tool is the skew chisel. In case anyone cares.

[@Xynudu]

Thanks Dan. I've never done wood turning, though the Schaublin 102 has the capability/a rest and is easy to clean. Maybe one day for a small job. Done plenty of timber house construction and general carpentry though. Cheers Rob

[@muhaahaloa941]

Nice finish :)..

[@Wooley689]

That did finish up nice didn't it. I wonder, why is the cross slide set to 39 degrees?

[@Xynudu]

Wooley689 The top slide just happened to be at that angle. It's not relevant to this operation. I usually keep it at an angle for facing, finer increments, better control clearance etc. Rob

[@rusticagenerica]

Is itpossible to make one's own tools for the lathe? If so, would you recommend any tutorial or resource to learn? In particular, how to you make "carbide" tool, and can HSS steel be enough to take care of metal lathing?

[@Xynudu]

Sure. Plenty of people do it. Plenty of videos on the subject. HSS did it all back in the early days before carbide, so there's no reason it can't do the same now. HSS will actually give a better finish and is capable of lighter cuts on poor grade steel than most carbide. I use HSS a lot. Start browsing. Cheers Rob

[@rusticagenerica]

@@Xynudu thanks a lot Rob !! God bless you

[@rusticagenerica]

@@Xynudu Found this : kzbin.info/www/bejne/qKSpd4qPpJ2ondk Thanks again :)

[@Xynudu]

Have a read of this : www.opensourcemachinetools.org/archive-manuals/Hercus_TextBook_of_Turning.pdf Shows how to grind HSS tooling. Old but good. Cheers Rob

[@rusticagenerica]

@@Xynudu May God bless you !!! So generous of you of giving your time. THANK YOU !

[@iancraig1951]

G"day Rob--I have increased the angles a bit on the tool you have shown and you can take of gossamer type swarf--half a thou or less if you need it..Using emery paper to get a shaft size for bearings is accepted industry practice--resulting in crap on your ways..Not good.. Shaving tools are under rated in my view so your vid is timely..I also like the vid on testing hardness of metals.. Regards E

[@Xynudu]

Hi Ian, Shear tools are great. I'm sure many people have never heard of them, and are missing out badly. You can play around with the angles quite a bit, and still get good results. I have two, one of which has a much greater angle on the trailing edge, which lets me angle it more towards the work, and cut right up to a shoulder. It's certainly very easy to grind them, and it's a works every time on anything finishing tool. Glad you enjoyed the video on hardness testing. It's one I was going to do way back, but thought people may find it a bit basic. Gives a few options and attempts to show how well some of these methods actually work. I expected some flack for sacrificing a few sacred cows on that one :) I like the auto punch. You can use it on the end of small rod and stuff, and get a good indication of what it's like. Cheers Rob

[@Xynudu]

Forgot to say I totally agree on how good a shear tool is for machining a journal for bearing fit - way to go. Only needs very light contact with the job to get that gossamer like swarf coming off. Makes it very easy to size stuff accurately. Cheers again Rob

[@thefxpsychologist2920]

Is it cutting from down or up

[@Xynudu]

It's cutting the same direction as a regular tool but is heavily angled.

[@naqashabbasi6345]

This tool make a taper size please help me

[@Xynudu]

Please explain.

[@naqashabbasi6345]

@@Xynudu Shear tool is make a taper size on lathe machine

[@Xynudu]

Your tailstock must be out of alignment, as a shear tool will give the same result as any other regular cutting tool. Cheers Rob

[@naqashabbasi6345]

@@Xynudu tail stock is allighnment but shear tool is slow slow deaply cutt

[@Xynudu]

They only do VERY light cuts or it will catch and dig into the work.

[@khiemnguyenthien3489]

V=?, S=? -> good

[@frankpitochelli6786]

great vid...but, less talk and more lathe.. thx.