Search found 51 matches

by quaver
Sat Oct 15, 2016 5:47 pm
Forum: How-to/Guides/Tips
Topic: How to Make these Beautiful Vases?
Replies: 6
Views: 2999

Re: How to Make these Beautiful Vases?

Autodesk Fusion 360 would be a great tool to use. It has a sculpt environment that is intended to handle organic forms. Powerful free-form shape tools.

https://www.youtube.com/watch?v=NypRE2aFhh4
by quaver
Sat Oct 15, 2016 5:37 pm
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

insta wrote: I will trade you a PEI MIC6 bed for a 50mm fan duct STL that fits my setup and can be printed without much in the way of supports.
I'll gladly take that offer insta... if your need is not urgent. It may be several weeks as my schedule is going to be a bit congested. :)
by quaver
Sat Oct 15, 2016 5:30 pm
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

Yes thats the esun carbon filled nylon Have you used this material much? How are adhesion and stringiness properties? What size nozzle? I have read that the fibers tend to like a 0.4 nozzle or larger. I have been looking at the Colorfabb XT-CF20 which is a carbon filled PETG. I have also looked at ...
by quaver
Sat Oct 15, 2016 5:21 pm
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

Nice looking rig, and interesting analysis. I'll try the cone thing on my duct setup. Thanks zemlin. A cone should make an improvement to any ducted fan arrangement. It occurs to me that a cone might also be beneficial for non-ducted bed fans as well. Air passing over the surface of the cone will t...
by quaver
Sat Oct 15, 2016 5:11 pm
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

very similar to mine IMG_5929.JPG Indeed it is Jim; very much inspired by your design. I was initially going to print and use yours but wanted to "tinker" with it a bit. One thing led to another and before I knew it I had spent far more time making modifications than I had planned. Is the photo of ...
by quaver
Fri Oct 14, 2016 6:48 pm
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

To beat a dead horse... I decided to run a CFD check on the whole bed fan system as an assembly. Interesting results. Found turbulence downstream of the fan motor support plate (see graphic). This structure is the same diameter as the hub of the fan. Gluing a simple cone to the back of this surface ...
by quaver
Wed Oct 12, 2016 4:14 am
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

CFD of the fan guard looks promising as well. Very little pressure drop (<0.09" H2O) and good distribution. Knock off a few of the sharp, interior downstream edges and it should be in good shape.
by quaver
Tue Oct 11, 2016 12:01 am
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

Thanks Insta. For grins and giggles I ran a simple CFD analysis on the duct assuming a 0.1" H2O static pressure at the inlet. Distribution looks nice and it seems the tongue in the center nudges air to the perimeter on either side which is what I was hoping would occur. The simulation does not take ...
by quaver
Mon Oct 10, 2016 11:52 pm
Forum: Filament
Topic: Taulman 910
Replies: 30
Views: 20807

Re: Taulman 910

I have not worked with the black 910. While 910 is not a PET based material (its a nylon alloy) Jules' write-up on PETG does have helpful information related to troubleshooting principles. The blobs/balls are most likely caused by what Jules has pointed out. Nylon can be stringy and the little hairs...
by quaver
Sun Oct 09, 2016 6:06 am
Forum: Modifications
Topic: Bed Fan Duct
Replies: 29
Views: 17389

Re: Bed Fan Duct

Finished the attachment design and fan guard. Mounting bar (green) is held to the extruder mount (brown) by two machine screws. Duct (blue) attached by means of a dove-tail tab. Should be easy and quick to install/remove. Fan guard is a new design intended to reduce noise level and improve airflow. ...