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Any Machinists On Here? (1 Viewer)

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I have need for either a machinist or someone with access to a water jet or plasma cutter. I need a single 1" square hole cut into a 2" thick plate of A36 steel.

Any help would be greatly appreciated.
 

Tenny

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CNC it with many many passes?

I have access to waterjet, but never cut steel that thick... I mostly cut thin aluminum (.062 to .500), plastic, and wood. Rarely steel. The waterjet would also have a significant taper at that thickness.

If you haven't found anything yet, I can ask around to see if any of the shops we send stuff to is around your area I can.
 
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PorpoiseHork
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It's for a hardy hole on a what will become a striking anvil, so hard to say if a CNC would be able to create the square corners needed for the tools to fit properly.

What sort of taper are we talking about? If it's more than say 1/16" then possibly a second cut after flipping the plate over? I know it would have a bow inward at the the middle of the hole but maybe I could work on that with a dremel or something like that and open it up to allow the tools to fit. That would be great if you could ask around and see. The other option I thought of is getting some 1" ID square tube and have it welded to one end of the bar.

Thanks for looking into this for me.
 

Tenny

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It's for a hardy hole on a what will become a striking anvil, so hard to say if a CNC would be able to create the square corners needed for the tools to fit properly.

What sort of taper are we talking about? If it's more than say 1/16" then possibly a second cut after flipping the plate over? I know it would have a bow inward at the the middle of the hole but maybe I could work on that with a dremel or something like that and open it up to allow the tools to fit. That would be great if you could ask around and see. The other option I thought of is getting some 1" ID square tube and have it welded to one end of the bar.

Thanks for looking into this for me.
CNC would do a pretty good job, you just have to run a small bit to clean up the corners.

Now as far as the kerf taper angle some of the newer machines have new techniques to reduce the amount. We just got a new WardJet that I think has some ability, but we aren't too well trained on it still... we prefer the Omax ones in general.

Now as far as flipping it over, it's technically possible, just would be pretty difficult (at least on our setup).

My coworker said he's had good success with this shop: Knust-Godwin LLC
 

soymilk

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how big is the steel plate? what size radius are you ok with in the corners?
 
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PorpoiseHork
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The plate is A36 steel and the dimensions are 12" long x 6" wide x 2" thick. What I need cut in is a square hole either 3/4 or 1" centered but offset to one end of the plate 2.5-3" from the end. The dimensions need to be fairly close to the linked picture below as possible. I don't need any of the other holes cut as in this picture as it is just for reference. Most of the tools I'd be using with it should have a solid shank and can be modified to some degree to fit, but the smaller the radius is for the rounded corners the better for the tools that are using square pipe instead.


JJPnJ3G.jpg

Example of one of the tools that'd be used.

OdooProductImage_3_592.jpg

Hope this helps.
 

soymilk

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I forgot about this thread. I got a mill in my garage. We can prob work something out. I can do a .250 radius in the corners and if you want it sharper I can use a file to work down the radius.

What part of town are you in?
 
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PorpoiseHork
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lol no worries, I'm in the Spring branch area. I appreciate the offer to cut the hole but won't need to it now. I managed to get a sweet deal on a German double horn anvil and won't need to use this plate as a striking anvil as I originally planned. I'll probably end up eventually cutting this plate in half and using one side for a cutoff plate since the anvil doesn't have one like a London anvil and the other for a homemade power hammer or for a forging press.
 

adahm

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Just seeing this. Don’t come to the lounge much.

Look up someone who does wire EDM if you need square inside corners or go down to 0.015” radius and make the mating part has radius or chamfer is larger than 0.015” on its corners.
 
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