Thanks for your feedback Dave and everyone!
I have also used online 3D production services and found them good. But the cost can be high and then you may have shipping costs. I have used SLS plastic (Selective Laser Sintering Nylon 12 white) which is durable and has no supports required and much cheeper than a Resin which is basically almost unaffordable thru a print service. The SLS process does have a slight grainy surface which is ok for larger scales. I used it on my 1:12 scale outboard motor. See Video. The cost was acceptable. See Photos of the outboard motor cost and with Free shipping and tax the total cost is $20.24 So basically you could purchase a 3D STL file online and use a print service rather than buying a 3D printer is some cases. You can also use your 3D slicer program to reduce the item to the scale you want within reason. As when the grain kills the details or falls below the 3D print guidelines for the 3D material chosen. Here an example of my Steam Punk Kayaks one with the girl is Resin Printed and the man is Printed SLS. Both are acceptable. See the grain difference up close on the man and man's Kayak. Kayak scale 3/4 inch to the Foot.
Dave, your Steam engine would be a real challenge to design in 3D but impressive.





I have also used online 3D production services and found them good. But the cost can be high and then you may have shipping costs. I have used SLS plastic (Selective Laser Sintering Nylon 12 white) which is durable and has no supports required and much cheeper than a Resin which is basically almost unaffordable thru a print service. The SLS process does have a slight grainy surface which is ok for larger scales. I used it on my 1:12 scale outboard motor. See Video. The cost was acceptable. See Photos of the outboard motor cost and with Free shipping and tax the total cost is $20.24 So basically you could purchase a 3D STL file online and use a print service rather than buying a 3D printer is some cases. You can also use your 3D slicer program to reduce the item to the scale you want within reason. As when the grain kills the details or falls below the 3D print guidelines for the 3D material chosen. Here an example of my Steam Punk Kayaks one with the girl is Resin Printed and the man is Printed SLS. Both are acceptable. See the grain difference up close on the man and man's Kayak. Kayak scale 3/4 inch to the Foot.
Dave, your Steam engine would be a real challenge to design in 3D but impressive.





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