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West Wings Hawker Tempest by edtherenderman. Viewed 1066 times.
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edtherenderman04-Nov-19 14:46
Like the nose and exhaust, I decided to model and print the propeller and spinner using my 3D modeling tools and 3D printer. Here is a picture of the propeller blades still attached to their supports and on the build platform. I had already printed the spinner in another batch with propeller blades that I didn’t like the shape of. These are the updated version.
Don C04-Nov-19 19:49
Wow!
BriandKilby05-Nov-19 08:18
that looks pretty neat!
edtherenderman05-Nov-19 14:48
Thanks! I'm using a DLP printer (similar to SLA) which uses a UV sensitive resin. The resin sits in a vat with a clear Teflon bottom. A screen projects an image up though the vat and hardens the resin. The build is then moved up until it releases from the bottom of the vat, then lowered again to print the next layer. Resolution is about 50 microns per slice. It took about six hours to print these. It’s pretty much a “Start and forget” process.
Creosotewind06-Nov-19 16:25
When is design this, do you have to include the sprues in the overall design? I once saw a demo of this at Allied Signal, in Phoenix. The aerospace company uses 3-D printing to prototype impellers and other full size engine parts. What used to take months to prototype now can be done in just days or hours.
pfinn07-Nov-19 04:29
I suppose I overlooked this post. Which CAD do you use? I have Rhino 6 at home but at my last job I used Solidworks for design/engineering. I also used the CAM module in Solidworks to toolpath the CNC I ran (HAAS VF4). As well as the 3D printers on site (Connex 500 and Eden 260V). I've been looking into maybe procuring a SLA 3D printer. How do you like yours?
edtherenderman07-Nov-19 09:57
Great questions! My pipeline is based around 3D art as opposed to engineering, but an engineering pipeline would probably be very similar. I use Blender.org (free 3D software), Maya and/or ZBrush for modeling. After modeling, I bring the model into a cleanup tool like Autodesk Meshmixer. This cleans up the model to make it manifold, and allows me to hollow out the model and add drain holes. I can also use the tool to create supports for the model, but I usually do that in the next step, which is import into Slic3r. This tool allows me to arrange the part(s) on the print bed, create supports, and generate either gcode, which is used with my FDM printer, or a zip file of images that are used by my DLP printer. I have a FDM and DLP printer. FDM is great for prototyping (getting size correct, general shape and proportions), but the resolution isn’t good enough for model building without a lot of finishing work. The DLP printer is able to print at a much higher resolution, but with a higher cost in time and materials. I was lucky enough to get into a kickstarter a couple of years ago for a Kudo3D Bean DLP printer. The print bed is a bit small (2.5” x 4.5”), but I’ve been really happy with the results. I have friends how have Form2 printers, which are more expensive, but they have a larger print bed, and are much more “user friendly.” At home 3D printing is a subculture of its own, and there is a lot of trial and error, reading blogs, and google searching involved. But when you finally get settings that work, it’s pretty cool! Here is a link (http://www.edcicka.com/zoompa.html) to a SciFi aircraft I created and then printed using my FDM printer. It’s really cool to see something I dreamed up in software become something I can hold in my hand!
pfinn07-Nov-19 12:56
Ed. Wow. I looked at your site. We seem to have very similar views in design. I had T-Splines (SubD) add-in with my Rhino and it was much more to my liking. It's gone now (computer crash, but with some calls I should be able to get it up and running again.) I'm definately not on par with you in computer savvy because of lack of practice. I've been looking at both Blender and of course Z-brush. I've done quite a bit with Sculptris. I graduated from Art Center in Pasadena way back when. Product Design. Anyway, not sure this is the place to discuss all this stuff. Sorry VA posters!! ;o). Do you mind if I contact you through your website? If not, totally OK too. Great stuff.
edtherenderman07-Nov-19 14:42
pfinn, Please do! Always fun to talk to like minds!
David Duckett07-Nov-19 14:51
I was going to say I see a horsey and a ducky but I changed my mind.😂😂😂
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