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umahunter
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A ratchet fits my scroll chuck but the 4 jaw are a smaller square
I used to do the same on the cam locks for my lathe. But on my lathe the came locks are 10mm square & 3/8" extension is pretty loose. I now use a 10mm drain plug socket. I prefer to use a ratchet & extension over the stock chuck type key.
This is what happens to a cam lock if you use a poor fitting wrench
View attachment 231877
Not enough carbon
You will be better off to go to a steel supplier and order you some 4140 and make you one
You can buy it 29 to 30 RC . It will machine easy enough . And is still hard enough .
Or just go it tractor Supply and buy a Grade 8
Bolt . Machine you one out of that .
Salvaged second hand grade 8 bolts are great for making parts that require that extra bit of toughness. Also old car / truck drive axles, coil and leaf springs are really good, sometimes may need annealing before machining, then re-hardening as required.Although usually ok with carbide tip tools. These parts are usually available at auto mechanic shops free.
Yes, there is.Ok is there a formula to figure out what size circle I need to come out with a square the right size I thought I mesured right but I came out way undersized once I milled down a square with square corners I must have mesure wrong some how ???