Ship's cowl ventilator in an improved design- Elegant and realistic swept shape-- not one of those "bowls on a stick" vents!
- Paired assembly reduces your per-model fee (please separate parts carefully using a fine saw; a nipper may shatter the brittle Frosted Detail plastic);
- Added a convenient spud to fit snugly inside inch-sized brass tubing;
- Wall thickness reduced in the smaller sizes;
- Material selection rationalized to simplify your choices (see below)
This vent sized for 0.250 inch (1/4", about 6.3mm) outside diameter brass tubing.
Cowl opening is 2x tube diameter.
Mounting: This is left up to the modeler. The cowls are designed to fit inch sized brass tubing. Simulated joiner rings, mounting flanges, and mount hardware should be the easy part, it's the cowls themselves that are so hard to make!Material Notes: "White Strong Flexible": Laser sintered nylon powder. Lowest cost, but parts are porous and gritty, and require a lot of filling and sealing to make a presentable part. "Polished" WSF has been tumbled in media, which closes much of the porosity. I think you're better off with the "Frosted Detail" material!
Parts are oil-free and accept any paint.
"Frosted Detail" and "Frosted Ultra Detail":
Same material at two printing resolutions. Both require some sanding, but it's much easier than with WSF. You can probably do just fine with FD in lieu of FUD.
FD/FUD is a multijet printed material-- think of an inkjet head spraying out droplets of plastic, curing each layer as it goes with UV light. It can make very fine finishes, but clean up is still required.
The process uses a soft waxy support around the part as the print is built up. Removal of the wax is often imperfect, and the process may leave waxes and oils on the part. These may be gently cleaned with many different solvents, such as spirits/paint thinner, even lacquer thinner (don't soak the parts though), followed by soapy water.
After this cleaning, you will likely find a white crusty deposit on the parts. This should be removed with light sanding, scraping, or brushing.
Paint: My experience is that oil based hobby enamels DO NOT cure on this material. Please use water based hobby acrylics instead, they work quite well.
An expensive option, but the parts are gorgeous! I don't offer the polished option, even more expensive, as it is quite easy to polish these lost wax investment cast parts yourself. This is not a powder metal, but solid cast brass... only the wax pattern is 3D printed.