What to do with this

[fuse]

I needed a small square to calibrate with but roofers squares are too cumbersome
Saw this and got it at reasonable price.
But the casting is rough and un-machined.
It wont sit flat and wobbles
I got a refund and was told to keep or bin it.
I could drop it in the scrap metal bin but am open to ideas on how to up cycle it.?

 

[Mike G]

Mount your belt sander and use it as a linisher. You should be able to get that thing accurate within just a few minutes. Obviously, remember that only the outside will be accurate.

 

[Trevanion]

As Mike says, you can finish the outside with something like a linisher or a file if you just want to use the outside measurement.

What are you calibrating?

If you want an alternative, the Shinwa squares are very nice quality.

https://toolsfromjapan.co.uk/shop/o...e-metric-try-and-mitre-square-shn-620-jpn-mtr

 

[Mike]

That looks like a variation of a carpenter's speed square, and not very well made. I used these in my youth while building houses, but would never use them for any joinery project.

 

[fuse]

Thanks all.
The steel part is spot-on its the die cast part thats unfit.
The belt sander idea sounds interesting -how would I ensure 90 degrees?

Ive had to buy a replacement already ,this time a magnuson roofers square from screwfix.
Its graduations are printed which is a little easier on the eye than the usual cast alloy ones which scatter the light.Thats why I bought the defective one originally.

I had a ridiculously cheap table saw that needed resetting almost every other cut so I gained the habit of checking regularly on all the saws now even after I got shot of it.

I had thought of demounting the aluminium part and just using the steel as an enhanced steel rule.

 

[Bod1]

Good machine shop, or a few minutes spent with a file will dress the alloy smooth, and square.

Bod1