funnel for testing thin walls or general useDeveloped from a sketchup model, printed in standard PLA with standard settings except for layer height set to 0.3mmNote the problem with the funnel print as it narrows caused by insufficient cooling before next layer. Might be worth using a fan to cool the neck of the funnel then print will be fine. Wall thickness ended up at 1.15mm averageNote there is infill on some layers which slows print down. With standard settings this took about 40 minutes to print at 48mm diameter.