Mick : I am disinclined to post platitudes and I don't know you well enough to try pulling your leg. This leaves questions or critical observations. If these provoke discussion there is always a chance of people raising negative observations - these could bring harm to your business, and so I haven't posted here until now.
Example : have you considered getting in touch with Gladiator Models, to see whether they can use your 3D printed parts in the kits they sell to hobbyists?
I get that and support that, inane platitudes are not what I'm expecting or others are too I suspect, what we're looking for is interest and dialog.
I try to post stuff to generate interest or get people to think about how to achieve something, the lack of response to me (rightly or wrongly) suggest people already know how to do it or it's of no interest to them. Given several other posts from others it's nice to know I'm not actually alone in this respect.
Regarding negative observations, you shouldn't open the floor to dialog and then get upset when it occurs, having said that, there are ways to get a sticky point across in an articulate manner. I'm not one for holding back myself, but feel if you leave emotion and personal preferences out of it then the observation will have some benefit at some point. There have been a few instances in the past where my observations have been acted on and the resultant upgrades fed into the kits, makes no difference to me, but new customers now have bits that are better.
If anyone posts something that may conflict with any of my business interests I'll politely say I cannot answer that. I'm not in the camp of ignoring it as I feel that does far more damage, not only to the person who wrote it put to all the other silent watchers who read it and wait the response. Far better to be open and honest with a short 'sorry not really at liberty to respond in detail'.
I have been in touch (we chat reasonably regularly) with David and we did something similar with the Royal Scot tender. All my 3D is available if anyone wants it and I feel it's a very good medium for hobbyists, however the market is not quite there yet to accept it as parts for kits in any great quantity. Sand boxes, tool boxes, brake cylinders etc are perfect but smokeboxes and fireboxes, I'm not so sure.