Gallery, Projects and General > How to's

Angle blocks

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kvom:
Whys:

If you want to mill an angle onto a piece of metal held in the vise, it needs to be tilted at that angle.  So if you have an angle block, you can place it on the bed of the vise and lean the workpiece against it.

Since 30, 60, and 45 are common angles, it's useful to have two metal triangles, one 30-60-90 and the other 45-45-90.

If you need other angles, you can build them using a set of angle blocks.  These are typically precisely ground.  Or you can use a sine block or sine vise which you set with gauge blocks.

I made a couple of the standard blocks at school.  I used the commercial ones to replicate the angles to mill the edges, and then ground them on the surface grinder.

The post shows a way to generate the angles fairly precisely when you don't have a reference.  Just drill the holes at the desired angle relative to the flat base, and then use drill rod to support the piece on the vise jaws before milling.  It's similar to that way you mill the crank webs on Bogs' engine.

Bernd:

--- Quote from: Mike K on August 09, 2009, 07:44:44 PM ---Thanks, Bernd.

One thing I found out from this project is that my metal protractor isn't very accurate.  The 10 degree block measured 11 degrees on the tool.  I'll probably make a 29.5 deg block with a little lip so I can setup the mini-lathe cross slide for screwcutting.

Mike


--- End quote ---

Now there's a good project to post. Make one and show us how it would be used. It sure would be easier than trying to crane your neck around to read the dial.

Bernd

Mike K:
Very sorry, guys.  I left out the most important part.  :doh:

I've edited the post (starting with the 3rd paragraph) to include it so the information isn't all over the place.

Sorry again.  I guess I was too excited about the results.

Mike

Darren:
Right, I'm with you now, the how helps a tad too..... :thumbup:

Well that looks simple enough and pretty useful too, thanks... :thumbup:

Arbalist:
I know this is an old post but this a very useful idea Mike, thanks a lot!

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