Ran these welds a little hot to make sure they reached the root.


Nice clean puddles on both sides.  Phoenix’s field frames came out amazingly square.  Which is a handy feature if we ever suspect that they have become bent under our typically massive loadings.  A quick check with a small square will tell all.

I wouldn’t want anyone to think that what Firefly has achieved ballistically has been done with anything other than brute force.  Two and a half tons is a lot of draw weight to be messin’ with. On the other hand, the Romans were not unknown for using brute force when it suited them. What good is a torsion engine if it doesn’t excel at handling it’s most salient engineering concept — torsion .

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