Tuesday, November 27, 2012

Plastidip Experiments

Plastidip Experiments

Plastidip Experiments

I was a little bored on Saturday so I thought I would mess around with the plastidip spray and practice a couple of techniques to see what worked and what doesn't. All plastidip test were applied to a painted/clearcoat substrate for the experiments(no, not on my car).

Masking:
Masked off a two inch wide stipe about 3 inches long
Four light coats of Plastidip applied and dried in-between each coat.

Test Pull #1: Straight pull of tape
Result: Ragged edge and looks like crap.
Test Pull #2 Cut line using razor blade prior to pulling tape
Result: Smooth edge, but a little wavy unless you use a straight edge. Also
will/can cut into the piece being plastidip.

Masked off a two inch wide stipe about 3 inches long
One medium coat of Plastidip applied and not dried

Test Pull #1 Straight pull of tape (while still wet)
Result: Nice clean stripe line

Finish:
Plain plastidip(four coats)
Result: Slight texture with a flat finish (looks fine because the texture looks
good with a flat finish)

Plastidip with clear enamel (Four plastidip and one clear enamel)
Result: Slight texture with a gloss finish. (looks like a paint job gone bad)

Removability:
Test #1 Four light coats of plastidip, dried
Result: Easy to pull off in large pieces.

Test #2 Two light coats of plastidip, dried
Result: Much harder to pull of in sheets. Worked best by rolling the thumb over
the edge like you would for removing double sided molding tape.

Test #3 Four light coats of plastidip and one clear coat, dried.
Result: Made the plastidip brittle and would not come off in sheets.

Obviously, there are several other combinations to explore, but I wasn't that bored.

Tinting plasti-dip - DipYourCar.com Plasti Dip

Glitter or powered reflective material?

Tinting plasti-dip [Archive] - DipYourCar.com Plasti Dip® Community Forum: "

I normally would recommend watching Maynard G the Mix Master on YouTube but I can't get through more than about a minute of his antics and his ballpoint pens.

lol.

With the experimentation we've done, liquid tints don't work. We've gone through solvent based and enamel based. They make the dip too soft; it smears after it dries. Powdered colorants seem to be the way to go.. but not all work. Don't have enough data to point you guys in the right direction yet.. but working on it.
GMMTC
08-18-2012, 06:16 PM
I have a bunch of extra crazy powder coat colors... would powdercoat make a suitable tint when mixed with plastidip?"

Monday, November 26, 2012

How to model a motorbike fairing using NURBS

How to model a motorbike fairing using NURBS

How to model a motorbike fairing using NURBS

Hi there,
this is a tutorial on how to model a fairly smooth and organic-looking fairing of a Suzuki GSX-1300 Hayabusa motorbike
We're going to be using both patch modeling ,more specifically,a technique called "lofting" (consisted of two or more
NURBS splines connected together with a flexible NURBS surface in between,hence the term "patch") and polygonal modeling,taking advantage of the many new modeling tools available recently in Blender (such as the Knife tool,Vertex slide tool and many more)
by the end of this tutorial we should know how to effectively model any smooth organic surface consisted of a single patch through using a variety of techniques


here's the link to this tutorial :
http://www.youtube.com/watch?v=K4BFucZameg&feature=plcp

NOTE : Please feel welcome to download these "blueprint"-looking reference images below and freely use them in your own modelling projects if you wish

hope you'll enjoy this!
Peter
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Unstructured Grids for OpenFOAM With Blender and enGrid 1.2 · enGits/engrid Wiki · GitHub

Unstructured Grids for OpenFOAM With Blender and enGrid 1.2 · enGits/engrid Wiki · GitHub
Blah Blah Blah

Creating Geometries

The next step is to create a neat sphere object inside of our fluid domain. Therefore we change back to Object mode and press Shift + A. In the pop up menu we select Add → Mesh → Icosphere and set Subdivisions to 4 while leaving the radius at 1 BE (see Figure 4). The geometry is finished now and ready to be saved as a *.blend file
Figure 4: The new icosphere inside of the fluid domain. Note the additional "Sphere" entry in the Outliner window.

and on and on and then to:

Exporting to OpenFOAM®

The mesh is now finished and is ready for a final export to OpenFOAM® . From the menu bar we select Export → OpenFOAM® → OpenFOAM® (Grid only). We thereby create a case directory with the constant/polymesh folder, sadly marking the end of the main part of this tutorial.
enGrid also offers the export of complete case directories including solver settings. These have to be set up in the Solver tab of the Edit boundary conditions dialog. Afterwards we choose OpenFOAM® (Grid + solver parameters) from the export menu.

Best mesh generation software for OpenFOAM -- CFD Online Discussion Forums

Best mesh generation software for OpenFOAM -- CFD Online Discussion Forums

For Calculix, you can first model a surface in Blender and then import that surface into Calculix to be extruded. I posted the import script and brief tutorials in a few other threads. Blender is at www.blender.org . 

Doug

convert blender mesh to openfoam - Google Search

convert blender mesh to openfoam - Google Search

Combined Use of Blender with OpenFOAM

www.imac.unavarra.es/.../Mesh/blenderWithOpenFOAM.pdf
File Format: PDF/Adobe Acrobat - Quick View
These Blender materials eventually translate to OpenFOAM patches. The decision ....CalculiX before sending the mesh with individual patches to OpenFOAM.

Mesh generation for Wind Tunnel -- CFD Online Discussion Forums

Mesh generation for Wind Tunnel -- CFD Online Discussion Forums
I need to do this on the cheap as the Greenpower electric car racing is for secondary schools in the UK where pupils and the parents design, build and race electric cars. http://portal.beam.ltd.uk/greenpower...cer/index.html 

I was hoping I could create a mesh as follows: 
1. Create a simple car design using Pro/Designer CAD or Blender and export the design as an STL file. 
2. Use blockMesh to generate a basic wind tunnel mesh with inlet and outlet with an appropriate number of blocks. 
3. Use the cellSet utility to remove the cells from the wind tunnel inside the CAD STL surface. 
4. Use cellSet ? to create a named patch (wall ?) from internal STL surface. 
5. Use this resulting mesh with the turbFoam solver. 

I am new to this. Is this sort of approach likely to work (I only need basic results, accuracy is not required) ? 
If so any pointers on how to do this ? I have managed to generate the wind tunnel mesh and have removed the inside of the STL surface. The documentation for the mesh utilities seems very spartan ... I am unclear on: 

1. How to set the default mesh from the mesh and the cell sets created. I have used subsetMesh and then copied the "0.005" directory created over "0". Is there a correct way to do this ? 

2. How to create the named patch/walls for the internal STL surface. 

Cheers 


Terry

Scientific visualisation in Blender - YouTube

Scientific visualisation in Blender - YouTube

  1. Scientific visualisation in Blender - YouTube

    www.youtube.com/watch?v=5-GtdRLfeFI
    May 11, 2011 - Uploaded by Opitman
    CFD results made with the BlendME add-on for Blender ...Taking a frame made in Paraview and rendering ...
  2. More videos for blender addon paraview »

OpenFOAM Motorbike Tutorial - Vespa Labs

OpenFOAM Motorbike Tutorial - Vespa Labs

OpenFOAM Motorbike Tutorial

    In Work - some information may be wrong! Also updating to OpenFOAM 2.1.1
    The basis of the Vespa CFD modelling (to start with at least) is the OpenFOAM Motorbike tutorial. Here are some notes on that tutorial, the first thing that people will need to do is get the tutorial to run before adapting it for a Vespa. Nerd Warning: This is a techy process to set-up and to get working, involving Linux commands and compiling and stuff. Also maths is involved and these notes are from a non-CFD expert and therefore are an overly simplified perspective (which may help or hinder). Any CFD experts out there, please feel free to jump in and correct and contribute!
    motorbike_tut.png

    CFD | Computational Fluid Dynamics | Totalsim

    CFD | Computational Fluid Dynamics | Totalsim

    TotalSim engineers are experienced in understanding customer requirements and advising on the intelligent use of CFD alongside other test resources.

    Our fluid dynamics consultancy services include:

    • Product design development – TotalSim are experts in applying fluid dynamic analysis to product design across a wide range of applications in order to maximise product potential.
    • Design optimisation – TotalSim are at the forefront of the use of multi-parameter optimisation techniques coupled with CFD morphing technology.
    • Flow characterisation and understanding of existing fluid dynamic devices.
    • Performance mapping of products over a range of conditions.
    • Scale-up of prototype designs without the need for full-scale testing.

    OpenFOAM

    TotalSim works with the OpenFOAM CFD tools developed by OpenCFD (www.opencfd.co.uk). We provide support and training in the use of OpenFOAM.

    openform logo

    CFD | Computational Fluid Dynamics | Totalsim

    CFD | Computational Fluid Dynamics | Totalsim

    TotalSim are vendors of the Sculptor and 3-matic software products as well as offering a hardware solution in the form of a computer array. See sample specification below.

    Software

    Sculptor software from Optimal Solutions allows parametric shape deformations to be performed directly onto a CFD model. This vastly reduces the need for costly re-meshing and makes CFD a viable tool for design optimisation.
    3-matic software from Materialise enables rapid and accurate conversion from laser scan data to surfaces suitable for CFD or FEA analysis. The resulting time and cost savings make reverse engineering an affordable option for a far greater range of products.

    Hardware

    TotalSim has developed it’s own computer array that provides a compact, flexible basis for CFD solving. Click here to view a sample hardware specification.

    OpenFOAM for MS windows binary release | Free Science & Engineering software downloads at SourceForge.net

    OpenFOAM for MS windows binary release | Free Science & Engineering software downloads at SourceForge.net


    OpenFOAM for MS windows binary release

     Prealpha
     44 Recommendations
     150 Downloads (This Week)
     Last Update: 
    DownloadOpenFOAM-1.5.00b-wininst.exe
    Browse All Files
    Windows

    This is the native MS windows release of OpenFOAM, an open source toolbox for Computational Fluid Dynamics (CFD). It was built with MinGW C++ as a set of native windows applications, which improves performance and eliminates the need for Unix emulations.
    OpenFOAM for MS windows binary release Web Site

    Thursday, November 22, 2012

    Jody Perewitz (with a Charlie Toy Protoys Race Body) etched her name into the land speed record books

    The Charlie Toy Body hard at work setting records and kicking butt... Congratulations to Jody.

    Jody Perewitz Laconia Bike Week Interview - Motorcycle USA: "

    Jody Perewitz etched her name into the land speed record books when she became the first woman to break the 200-mph barrier on an American V-Twin. We talked to Jody about the experience recently during Laconia Motorcycle Week. right. Even though she had never ridden on the fabled Bonneville Salt Flats before, Jody fearlessly rode herself into the record books last September at the 2011 BUB Motorcycle Speed Trials, rocketing over the Salt at 203.111 mph as she became the first woman to go over 200 mph on an American V-Twin. We caught up with Jody during Laconia Motorcycle Week 2012 at the Naswa Resort where she graciously answered a handful of quick questions for us.

    The best fairing for setting motorcycle land speed records at bonneville or anywhere else for that matter.

    Jody Perewitz - Hot girl on a hot bike, going really fast :)



    "

    Wednesday, November 21, 2012

    Friday, November 16, 2012

    DIY Kustom Kulture Vector Pinstripes using Adobe Illustrator CS5 | MediaQuest Signs

    DIY Kustom Kulture Vector Pinstripes using Adobe Illustrator CS5 | MediaQuest Signs

    If you dig old-school kustom kulture pinstriping, here’s a DIY tutorial to help you create your own using the awesome new stroke profiles in Adobe Illustrator CS5. Take it one step further by having MediaQuest Signs produce your design in precision-cut 3M vinyl decals.





    Step One:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 1
    Pinstripes generally consist of multiple line segments that are symmetrical. Start by using the pen tool to create a vertical line. This will serve as your line of symmetry. Give it a 1 pt stroke weight and a 3 pt dash. Or, if you have a touch of the lazy, just drag a vertical guide.

    Step Two:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 2
    Focus on creating only one half of your design. Once complete, you will copy/paste/reflect to make the symmetrical second half. Using the pen tool, experiment with your first line segment. Start dropping points, click and drag for curves. Keep it simple using a 1 pt stroke in the color of your choice.

    Step Three:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 3
    Create a new segment using a different color stroke.

    Step Four:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 4
    Keep adding segments until you’re satisfied with the result.

    Step Five:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 5
    Select all of your segments, copy, paste and reflect 90 degrees on a vertical axis using your line of symmetry as the point of reflection. Delete your line of symmetry and you have a pinstripe — awesome!

    Step Six:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 6
    In order to maintain your symmetry, group each pair of opposing segments so that any changes you make are reflected on both sides. Then start experimenting with stroke weight to beef up your pinstripes.

    Step Seven:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Step 7
    Now the cool part . In the stroke pallet is a drop-down menu for “Profile”. Select a segment pair and choose different profiles until you achieve your desired effect. You may also choose to reverse the effect by toggling “Flip Along” next to the “Profile” drop-down, as well as adjust your segment caps and corners by toggling through the various settings in the stroke pallet. Make something cool!

    Finished Kustom Kulture Pinstripe:

    MediaQuest Signs Kustom Kulture Pinstripe Tutorial: Finished
    Once you’re satisfied with your creation, select your pinstripe and go to the top menu drop-down under “Object” -> “Path” -> “Outline Stroke”. Save your design in (ai) format under version Illustrator 8, and it’s ready for the vinyl plotter. Call 319.848.7446 for a quote!

    Thursday, November 15, 2012

    Sunday, November 11, 2012

    Fanedit.org - Greatest FanEdits of All-Time

    Fanedit.org - Greatest FanEdits of All-Time:

    This is a selection of the greatest true fanedits (not extended editions) ever created. To make it to this list a fanedit needs at least 5 ratings with an average of 8.5/10 or at least 10 ratings with an average of 8.3/10. It was you, the great FE community, who created this list with your ratings. Your participation is needed, so others will know, what is great and what is not. 


    AMDS films