Final Presentation

Come to LT1/LT2 at your regular class time.

Requirements

Images to save in your R: drive folder (R:\Hand-ins\DSDN\DSDN104-1\Project 3 Final):
• One hi-res rendered image of your three digital models.
• One hi-res photograph of your 3d printed physical model.

 

Images to post on your blog:
• Design precedents (minimum 6).
• Development images including sketches (minimum 4).
• One rendered image showing your three digital models.
• One photograph of your 3d printed model.

Thing to bring to presentation:
• One 3D printed model.

Early Presentation Date

- Save a rendered image and a photo of your 3d print in R: drive by 9am.

- Post all required images on your blog by 9am.

- Bring your 3d model.

 

If you are interested, ask your tutor now to put your name in the list. However please understand that we may not be able to accept all your requests.

URGENT!

Here’s a list of students who submitted wrong/faulty/no files. Please fix/modify/make yours immediately and save in R: drive (R:\Hand-ins\DSDN\DSDN104-1\Project 3 STL Late\[Your Name]) by today.

If your name is not listed below, go get yours at the shop.

 

[Wrong File] Save your design in STL format, not in MAX or SLDPRT

Jarrod Dick

Vaioleti Ahchong

Nicholas Hanover

 

[Dimensions Too Big or Small] Make sure all of units are set to MILLIMETERS. Fit yours in a 30 mm x 30 mm x 30 mm cube.

Baker, Mitchell
Brady, Thomas
Chapman, Benjamin
Chapman, Holly
Diver, Lydia
Faesenkloet, Hannah
Lander, Aimee
Meintjes, Maria
Patel, Kishan
Pearson, Daniel
Pilcher, Caitlin
Taylor, Emma
Young, Andrew

 

[Errors] Use STL Check modifier (3ds Max) or MeshLab or Netfabb

Carpinter, Katherine
Christison, Jarred
Dai, Baoxiong
Dorresteyn, Shaun
Eaton, Hannah
Ellison, Simon
Gordon, Dylan
Goulding, Julian
Hunt, Jessica
Huston, Jack
Kani, Robert
Keir, Kristian
Martin, Thomas
McGrail, Braedon
Otto, Adrienne
Zino, Imogen

 

[No File]
Barrow-Fraser, Brodie

Crosse, Thomas

Dennis, Cleeve

Fuimaono, Isiah

Hoult, Amelia

McCurdy, Blake

Prokop, Nichola

Withers, Jesse

 

 

If you have any problem, please discuss it with your tutor right away.

What is the STL Check? and why?

http://www.3dmax-tutorials.com/STL_Check_Modifier.html

 

The STL Check modifier checks an object to see if it's correct for exporting to an STL file format (stereolithography). Stereolithography files are used by specialized machines to produce prototype physical models based on the data in the STL file.

 

To create a physical model, an STL file must have a complete and closed surface. Using STL Check to test your geometry before you export it can save time and money when the file is used to create the physical model.

 

STL Check errors.

1. Open edges

2. Double face

3. Spikes

4. Multiple edges

Procedure

To check an object for STL compatibility:

1. 
   

    Select the object, then on the Modify panel, choose Mesh Editing > STL Check from the Modifier List.

2. 
   

   Turn on Check.

   The message in the Status group shows if errors are found. STL Check indicates errors by selecting the problem geometry, assigning it a special material ID, or both.

Interface

Errors group

Choosing one of these options selects incorrect geometry specific to the choice, and selects it depending on the option chosen in the Selections group.

Open Edge—Checks for open edges (holes).

Double Faces—Checks for faces that share the same 3D space.

Spike—Checks for spikes, which are isolated faces that share only one edge with the object.

Multiple Edges—Checks for faces that share more than one edge.

Everything—Checks for all of the above.

Tip: While checking Everything takes the longest amount of time, it is recommended if you plan to use the STL file for generating a physical model.

Selections group

These options specify the level of incorrect geometry that's selected, based on the settings in the Errors group.

Don't Select—When on, STL Check doesn't select any part of objects in error.

Select Edges—When on, STL Check marks the edges of faces in error by selecting them. The selection of erroneous edges is visible in viewports.

Select Faces—When on, STL Check marks the faces of any object in error by selecting them. The selection of erroneous faces is visible in viewports.

Change Mat-ID—When on (the default), STL Check also marks faces in error by assigning them a unique material ID. Use the spinner to choose the value of the material ID that STL Check uses.

Check—Turn on to perform the STL check. For complex objects, expect a pause between the time you turn this on, and the time you see the reported errors in the Status group. Default=off.

Status—Displays the number of errors when Check is on.

Tip: If Select Edges is turned off, you can see faces in error by applying an Edit Mesh modifier and selecting by material ID at the Face sub-object level. You can also assign a Multi/Sub-Object material to the object to help you see where the errors are.

 

3d Printing

It starts today downstairs just after you submit your STL file.

The job may be done in alphabetical order by your last name, so check every day if yours is ready at the shop.

An Earlier Critique

The final critique/submission is scheduled on 16 and 17 June, in the study/exam period. If you are NOT able to attend, please ask your tutor right away. We are going to organise another critique on an earlier day for those students. Please make sure that they will be required to finish and submit all the assignments before that day (to be announced soon).

Project 3 Important Dates

How to Clean your Model

http://www.rnd-tech.com/OBJET/3-AlarisProductPresentation-Eric/Model_Cleaning_NaOH.pdf

Benefits

- Slightly improves surface finish, eliminates small amount of residue left on surface.

- Improves transparency to some extent.

- Makes separation of support model easier, especially for tight tolerance or moving parts.

- For very complicated parts with longer support removal.

 

How It Works

- Buy 2% Sodium Hydroxide (NaOH) aqueous solution available at the school shop.

- Please note that all parts must still undergo support removal before this cleaning.

- Fine sandpaper can still be used for a glossier finish.

- All handling of Sodium Hydroxide should be done according to local safety conditions

 

Side Effects

- This soaking should not surpass 2 hours otherwise there is a risk of deformation.

- For the large majority of models, there will be no effect on mechanical properties.

- For models with thin walls <1 mm in z direction (less so in x and y), there might be slight deformation so these models should be soaked for a shorter time.

 

Model Cleaning Procedure

- This cleaning procedure is intended as a surface preparation procedure, especially desirable, before sand blasting or painting.

- This procedure requires the use of eyes protective goggles and hand latex gloves.

- Sodium hydroxide solution is an alkaline (basic) solution that should not come in contact with eyes and skin.

- In case of accidental eyes or skin direct contact with the sodium hydroxide solution, immediately thoroughly clean the contacted area with running tap water.

- Remove the support material and clean the model as thoroughly as possible.

- Immerse the model into a 2% Sodium Hydroxide for approximately 1-2 hrs.

- Immediately rinse the model using running tap water. Remove residual support material.

- Wipe the water from the model using wiping paper and wait till the MODEL is completely dry.

- For faster drying, it is recommended to immerse the model in Isopropyl alcohol for a few seconds and let it to dry at room temperature for approximately half an hour.

STL Check

 

It is recommended to verify your digital model before save it in R: drive. Your design will not be printed on time if contains critical problems!

 

1. Run STL CHECK Modifier in 3ds Max. Try reducing the errors.

2. You may use third-party applications such as MESHLAB or NETFABB for the purpose (already installed on school computers).

 

* Take a look at following articles for details.

http://www.shapeways.com/tutorials/how_to_use_meshlab_and_netfabb

http://www.shapeways.com/blog/archives/312-Netfabb-is-an-awesome-STL-viewer-repair-tool.html

http://www.shapeways.com/tutorials/fixing-non-manifold-models

http://www.shapeways.com/tutorials/errors#fixing_your_file

 

How to pass 3ds Max customs

It is no rare thing to meet with unresponsive 3ds Max on the way to importing a .STL file from Solidworks. Here's a tip to escape from the annoying sudden death. Note that it's not a smuggling process!

 

1. In 3ds Max, click the logo and select Import-Import.

 

2. Set the Files of type to StereoLitho (*.STL) and locate the folder where your STL file is stored.

 

3. Select Quick Weld under Weld Vertices and clear the check box of Unify Normals in the Miscellaneous section.

 

4. Click OK and see what happens. If the symptom persists, try unchecking bothRemove Double Faces and Auto-Smooth as well then call us.

Rapid Prototyping Videos

Rapid Prototyping

 

Rapid Prototyping Process

Units

Make sure the units are all set to MILLIMETERS or your model will not be printed.

-Solidworks

 

-3ds Max

Project 3

Do some research

- Find precedent images (more than 6) and post them to your blog.

- What software will you use? Solidworks or 3DSMax

- Experiment with making an STL file in both Solidworks and 3DSMax – convert between the two

- Experiment with lofts/flex

- Sketch 5 concept images

 

Create basic shapes and repeat their geometry in various ways

How?

- Select the vector paths you want to create patterns from.

- Click Object then Transform

- Move, Rotate, Reflect, Scale, Shear

What happens when I click ‘copy’ as opposed to ‘ok’?

Try CTRL+D after a transform action. This is a short cut to repeat whatever came before.

 

Blending different vector paths to find in between geometry

How?

- Select the vector paths you want to blend.

- Click Object then Blend then Make (Alt+Ctrl+B)

- Click Object then Blend then Blend options…

- In Blend options window select specified steps and punch in some numbers – remember to select preview

Double click window to isolate vectors and change the blend effect.

Object expand to convert preview to vectors.

Export as a DXF in order to open in Solidworks.

Submission

Save following files in R:\Hand-ins\DSDN\DSDN104_1\Project 2 Final\[Student Names] by deadline.

- 1 hi-res image of revised render of your digital model

- 1 hi-res photograph of your laser cut (physical) model

- 1 hi-res image of your “combo” composition (optional)

 

Post following images on your blog by deadline.

- Images of design precedents (minimum 2)

- Development images including sketches and sketch models (minimum 6)

- 1 revised render of your digital model

- 1 photograph of your laser cut (physical) model

- 1 combo image (optional)

 

Bring following things to presentation.

- Sketch models (minimum 5)

- 1 high quality laser-cut model

Missing Blogs

If you should find your name below, let your tutor know your blog URL immediately.

 

Christopher Arthur
James Bowman
Xial Che
Mitch Duncan
Danielle Gibbon
Jin Han
Amelia Hoult
Robert Kani
Chris Mahan
Tom McArthur
Braedon McGrail
Anna McKendry
Alex Metcalfe
Nikki Prokop
Eleanore Rogers
Jordan Shand
Lucas Slebos
Lee Woodman

Get Your Parts

You will get your laser cut parts today and tomorrow.

 

Check if everything is okay. Compare with your profile.

 

If you have any problems with your pieces (missing or broken parts, ill-fitting pairs, etc.) let your tutor know right away.

 

Some of you may need to peel off backing first. Be careful not to lose your material, especially the outer layer of card.