Shear

I’ve had the idea of making a hand shear for a while, it’s not something I will use on a regular basis in the machine shop but it will indeed come in handy from time to time, instead of sawing everything now I can shear allot of it, it will cut straight lines and radiuses on mild steel up to 1/8” in thickness, it will cut 6” in width but could be made to cut wider, 6” will work just fine for me.

The upper and lower frames were constructed from 3/4” A-36 steel plate, the blades were fabricated from A-2 tool steel hardened tempered and ground, the lever and linkages were made from 4140 steel hardened and tempered, the handle was fabricated from 3/4” schedule 40 pipe, all assembly bolts are socket head cap screws, the shear is mounted onto a heavy wooden work bench for rigidity.

Mild steel would work for the construction of everything except the blades, using mild steel for the linkages and levers would soon wear out due to the force it takes to shear metal, using a heat treated alloy steel for these parts greatly lengthens the life of the tool, all pivot points use 1/2“modified shoulder bolts, shoulder bolts are heat treated and ground round and fit nicely into the reamed holes, there are a variety of metals the blades can be made from such as A-2, D-2, H-13, S-7, HSS and a few others.

The shear was designed to last for many years, it was designed with close fits and tight tolerances, the blades can be resharpened many times over.

Below you will find some photos of the construction and a few examples of the shear being used, hope this will be helpful.

As always thanks for looking
And Happy Machining

Doug



Attachment 18632

Machining the plates

Attachment 18633

Tapping all the holes

Attachment 18634

Making the blades

Attachment 18635

Modifying the shoulder bolts using the carbide threading tool holder and extended point live center I previously made

Attachment 18636

All parts made and ready to assemble

Attachment 18637

Testing the shear

Attachment 18638

Example of cuts

Attachment 18639

Straight shearing

Attachment 18640

End view

Attachment 18641

Shearing

Attachment 18642

Overall view

Great work! I want to try to make one!

Great clean way to cut sheet metal in such a nice workshop, superb work as ever.

Very precisely made of well-chosen materials. Excellent job. I would also like to have this useful tool but unfortunately there is no place for it in my workshop.

I have cheap 8 and 12" imports but they don't shine a light on your build, well designed and very well built.

<!-- BEGIN /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->
Thanks rossbotics! We've added your Shear to our Metalworking category,
as well as to your builder page: rossbotics's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-shear-3"> <img src="/uploads/201577/homemade-shear-3.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-shear-3">Shear</a> <span> by <a href="http://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/shear'>shear</a> </div> </div> </div> </div>
<!-- END /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->

You got my vote for tool of the week!

My vote too.

Nice tool & workmanship. Any chance you could supply a blueprint for others to follow to build one like this ?

Thanks mdhatter3
I have submitted cad drawings, photos, bill of materials and all documentation to build this tool to Jon the administrator, he is reviewing everything to make sure it's all complete and satisfactory, he will then post the drawings for download.

Thank You

Doug

Congratulations rossbotics - your Shear is the Homemade Tool of the Week!

Huge week here; it was going to have to be a great tool to win, and this one did it.

For people wanting to build this shear, we're currently processing plans sent in by rossbotics (including assembly instructions, bill of materials, photos, and numerous technical drawings), and these full plans will be available soon for $5. In fact, rossbotics just dropped the price of all of his plans to $5.

Numerous entries this week, including Angle Grinder Modifications by Tuomas, a Miniature Tap Wrench by mklotz, a Cookie Stamp by Christophe Mineau, a Line Boring Bar by Frank S, a Hand Hammer by frugalolgeezer, a Torch Cutter Bar Roller Guide by oldtimer, a Low Profile Manual Counter by mklotz, a Chainsaw Bar Sprocket Greaser by xynudu, Skiving and Knuckle Knives with Sheaths by frugalolgeezer, a Gear Repair Method by Vyacheslav.Nevolya, a Finger Brake by bobs409, a Wooden Chamfer Plane by Mikhandmaker, and a Lathe Work Truing Tool by Christophe Mineau. We also had two very popular tools from stainless stål: a Tube Dent Repair Tool and an Angle Grinder Sander.

rossbotics - you'll be receiving a $25 online gift card, in your choice of Amazon, PayPal, Giftrocket, or bitcoin. Please PM me your current email address and gift card choice and I'll get it sent over right away.


This is your 16th Tool of the Week win! Here are all of your 16 wins:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/surface-gage-12175#post14591"><img src="/uploads/96960/height-and-square-gauge.jpeg" alt="Height and Square Gauge" /></a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/surface-gage-12175#post14591">Height and Square Gauge</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags"> tags: <a href="/tag/gauge">gauge</a>, <a href="/tag/square">square</a>, <a href="/tag/dial-indicator">dial indicator</a>, <a href="/tag/height-gauge">height gauge</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/filing-machine-12989#post15657"><img src="/uploads/100104/filing-machine-3.jpeg" alt="Filing Machine" /></a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/filing-machine-12989#post15657">Filing Machine</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags"> tags: <a href="/tag/file">file</a>, <a href="/tag/gunsmithing">gunsmithing</a>, <a href="/tag/motor">motor</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/slitting-saw-arbor-15838#post21004"><img src="/uploads/110216/slitting-saw-arbor-7.jpeg" alt="Slitting Saw Arbor" /></a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/slitting-saw-arbor-15838#post21004">Slitting Saw Arbor</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags"> tags: <a href="/tag/machining">machining</a>, <a href="/tag/arbor">arbor</a>, <a href="/tag/slitting-saw">slitting saw</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/threading-insert-tool-holder-16929#post22973"><img src="https://www.homemadetools.net/uploads/139555/threading-insert-tool-holder.png" alt="Threading Insert Tool Holder" /></a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/threading-insert-tool-holder-16929#post22973">Threading Insert Tool Holder</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags"> tags: <a href="/tag/lathe">lathe</a>, <a href="/tag/tool-holder">tool holder</a>, <a href="/tag/threading">threading</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/tool-makers-vise-18400#post25623"><img src="https://www.homemadetools.net/uploads/118802/toolmaker-s-vise-2.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/tool-makers-vise-18400#post25623">Toolmaker's Vise</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href="https://www.homemadetools.net/tag/vise">vise</a>, <a href="https://www.homemadetools.net/tag/machining">machining</a></div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/indexing-fixture-27750#post37609"><img src="https://www.homemadetools.net/uploads/129644/indexing-fixture-2.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/indexing-fixture-27750#post37609">Indexing Fixture</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href="https://www.homemadetools.net/tag/gears">gears</a>, <a href="https://www.homemadetools.net/tag/indexing-unit">indexing unit</a>, <a href="https://www.homemadetools.net/tag/fixture">fixture</a></div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/r-8-modular-gear-cutter-arbor-29332#post40078"><img src="https://www.homemadetools.net/uploads/132398/gear-cutter-arbor-2.png" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/r-8-modular-gear-cutter-arbor-29332#post40078">Gear Cutter Arbor</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href="https://www.homemadetools.net/tag/arbor">arbor</a>, <a href="https://www.homemadetools.net/tag/gears">gears</a>, <a href="https://www.homemadetools.net/tag/cutting-tool">cutting tool</a></div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/direct-indexing-sharpening-fixture-31319#post43293"><img src="https://www.homemadetools.net/uploads/136090/direct-indexing-sharpening-fixture.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/direct-indexing-sharpening-fixture-31319#post43293">Direct Indexing Sharpening Fixture</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href="https://www.homemadetools.net/tag/sharpening">sharpening</a>, <a href="https://www.homemadetools.net/tag/fixture">fixture</a></div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/tool-post-grinder-33437#post46937"><img src="https://www.homemadetools.net/uploads/139267/tool-post-grinder-16.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/tool-post-grinder-33437#post46937">Tool Post Grinder</a> <span> by <a href="/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href="https://www.homemadetools.net/tag/grinder">grinder</a>, <a href="https://www.homemadetools.net/tag/pulley">pulley</a>, <a href="https://www.homemadetools.net/tag/tool-post">tool post</a></div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/end-mill-sharpening-fixture-41232#post59042"> <img src="/uploads/146651/end-mill-sharpening-fixture-2.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/end-mill-sharpening-fixture-41232#post59042">End Mill Sharpening Fixture</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/sharpening">sharpening</a>, <a href='https://www.homemadetools.net/tag/fixture">fixture</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/machine-tool-dial-making-fixture-56086#post83022"> <img src="/uploads/163713/homemade-dial-making-fixture.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/machine-tool-dial-making-fixture-56086#post83022">Dial Making Fixture</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/fixture'>fixture</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/brass-shop-hammer-57046#post84922"> <img src="/uploads/164505/homemade-brass-hammer.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/brass-shop-hammer-57046#post84922">Brass Hammer</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/hammer'>hammer</a>, <a href='https://www.homemadetools.net/tag/machining'>machining</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/forum/universal-grinding-fixture-58728#post88008"> <img src="/uploads/166373/homemade-universal-grinding-fixture.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/forum/universal-grinding-fixture-58728#post88008">Universal Grinding Fixture</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/grinding'>grinding</a>, <a href='https://www.homemadetools.net/tag/fixture'>fixture</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-tilting-dividing-fixture"> <img src="/uploads/169201/homemade-tilting-dividing-fixture.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-tilting-dividing-fixture">Tilting Dividing Fixture</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/indexing-unit'>indexing unit</a>, <a href='https://www.homemadetools.net/tag/fixture'>fixture</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-dial-indicator-attachment"> <img src="https://www.homemadetools.net/uploads/169409/homemade-dial-indicator-attachment.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-dial-indicator-attachment">Dial Indicator Attachment</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/milling'>milling</a>, <a href='https://www.homemadetools.net/tag/dial-indicator'>dial indicator</a> </div> </div> </div> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-shear-3"> <img src="/uploads/201577/homemade-shear-3.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-shear-3">Shear</a> <span> by <a href="https://www.homemadetools.net/builder/rossbotics">rossbotics</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/shear'>shear</a> </div> </div> </div> </div>

Congratulations. Well deserved.

Detailed plans for this tool are now for sale for $5 -- Hand Shear plans for sale