I value "sage" advice. Perhaps one of my next few projects will be a large diameter fly cutter. With any luck, I'll have it for 30 years....
<SOME SNIPPED FOR BREVITY>
However "you ruined that head" and "that's not how we do it" aren't truly constructive, now are they?
I am finding in life that thick skin is a considerable asset,
that not everybody throwing caca at me is my enemy,
and that many of those who feed me words of honey are not my friends or even worth having around.
Yup, perhaps that ^^^ was a bit harsh, but as a guy who did machining for a living I had similar feeling running inside me. I could see the stresses in the piece and picture how well it was held and the possibility of slipping and not being flat when removed from the vise. I just kinda said "Ouch" inside and bit my tongue. Really hard to take advice on a public forum like this too, and credit you with the cajones to show your stuff James. I learn a lot from you. You didn't ruin the head, but it is not a salable or perhaps even a useable item without rework. While Ken's words may not have been smooth and soft, every one of them is worth listening to, and that he took the time to give you his trade secrets would indicate to me that he gives a darn. Grow thick skin and see deep into the message.
I would like to also point out that this is my first milling operation (ever!) and this machine wasn't purchased as part of a business (or even for profit). I purchased this machine and equipment personally to be able to tinker in my garage and get quite a bit of enjoyment in learning hands on and figuring out what does and does not work. While you can learn a lot by taking advice from folks (I do quite a bit of research before taking on any normal "finished" endeavor) I find it more satisfying to learn some of these lessons first hand (read: Screw up some sh*t once in a while, learn life lessons!).
I've also found that sometimes, just occasionally, re-inventing the wheel leads to new ideas. If everyone ONLY does exactly what's already been done before, nothing new ever comes out. We're not reinventing the wheel, only remaking it.
Hey, you are talking to the head of the Square Wheel Society here!
But I went and took the training in machining and most endeavors I have jumped into, and learned the conventional way first. That "conventional way" is the combined experience of hundreds of generations of machinists and scientists before you. You do not have the time in your lifetime to make all those mistakes, I assure you.
My company has had a change of philosophy over the years (as have a lot of US companies), from the old country "apprenticed tradesman" approach (that I learned under) to "introductory courses and on the job training". I see good experienced guys with big blanks in their knowledge because they didn't do the full classroom or textbook training. Anyone entering a new field needs to at least read and trust the textbook on it, cover to cover, before venturing off on a new tangent.
James, I love your unfettered projects! Let our skins thicken up a bit ('tis nobler in the mind to suffer the slings and arrows of outrageous fortune) and keep at it buddy! Keep sharing and keep learning, and for Heaven's sake, keep those outside the box projects coming, now that you have the means to make them.
Sure wish I had a machine like that sitting in my garage...
Steve