rapid prototyping

The growth in computing power has had a major impact on modelling with computer-aided manufacture. Rapid software and hardware developments allow new opportunities and exciting new technologies to create dynamic modelling of ever-greater complexity. Models can be simulated by designers using software, tested and trialled virtually before sending to a variety of peripheral machines for prototype manufacture in an ever-increasing range of materials.

3D Printing

Fused deposition modelling (FDM)

The most accessible type of 3D printing technology, FDM involves the laying down of thin layers of material, usually a type of plastic. The filament is heated in a nozzle and then "drawn" on layer by layer.

Stereolithography (SLA)

In this process an object is created by selectively curing a thin layer of liquid resin with a laser. A laser heats selected areas of the resin, turning it into a solid. The process continues until the piece is completed.

Laminated object manufacturing (LOM)

In this process, layers of plastic, metal, or paper are cut with a laser and then stacked on top of each other. An adhesive is applied between each layer.

Large parts can be made, compared to plastic FDM technologies. The parts can also be refined, cut, or milled afterwards.

Selective laser sintering (SLS)

In this process a CO2 laser fuses powder, layer by layer, to create a 3D form. Similar to SLA, a layer of powder is laid down and cintered (burnt) with a laser. The build plate moves down and another layer of powder is added. This new layer is cintered, and so on until the form is complete. Uncintered powder is removed from the chamber to reveal a complete 3D form. The uncintered powder can be reused.

Laser cutting

Laser cutting is a technology that uses a laser to slice materials. While typically used for industrial manufacturing applications, it is also starting to be used by schools, small businesses, and hobbyists.

The precision levels and edge quality achieved with laser cutting machines are better than traditional cutting methods, as the laser beam will not wear during the laser cutting process. Laser cutting technology also enables us to cut complex shapes without the need for tooling and at a similar or faster speed than other cutting methods.

Task 1

A common production method is finger joints and we need to develop a few basic techniques while designing these.

Modeling and making a Tea Light candle holder

Model your parts

Part 1 - making the sides

Part 2 - Making the base

Refer to the "Tips & Tricks' video tutorials (above) and then design your own tea-light adhering to the overall dimensions as seen in the tutorials above

Design on the 4 sides of the sketch to allow the light of the tea candle to shine through

How to make a linear pattern of the desired shape

This will show you an easy way of copying your shape across the whole side of the tea candle holder

Some pattern ideas

Produce Detailed drawings

Of YOUR complete design (See example to the Right)

Tea light detail.PNG

Prepare your sketch for laser

Set your sketches up for Laser cutting

You need to have Adobe Illustrator installed

You need to have all parts to be cut in one file

Disregard placing an image if you are only cutting

Files need to be cut with the assistance of Ms Thao

EMAIL Ms Thao and CC (your teacher)

dtpthao@unishanoi.org

cc: Your teacher

Dear Ms Thao and (your teacher),

I have finished my tealight holder design and have attached it to this email. I have also addressed the areas below:

Created a 100% RED outline with a stroke set to .001pt for all the parts that I would like to cut through with the laser cutter.
Ahered to the size requirements for it to hold a tealight candle
Any areas of my design in 100% BLACK is so that the laser cutter knows to engrave here and not cut.

Thank you for your time, effort, and diligence in helping me to complete my product.

Your humble pupil...

YOUR NAME

Veracross Upload - Detailed drawings & presenting the product

Design TDA Modeling B4 & C3 - Screens shots of the Detailed drawings & the Assembly of modeled (laser-cut) parts

Task 2 (extension)- 3D print a model from Onshape

We will look at taking your Model from OnShape (as an STL file) loading it into FlashPrint, adjusting settings and saving to an SD card ready for printing :)

Download file from OnShape

You will have to save your part/model as an STL file for Flash Print to recognize it as a part for 3D printing

Settings for Flash print

If you DON'T have FlashPrint installed see below

For BYOD computers (gr 9-12)

Install and setup FlashPrint from your computer by clicking on the appropriate image to the right (MAC or WIN)
When promted to update to lastest version select NO

WINDOWS

MAC

When you have completed the 3D print product (Customised luggage tag, keyring), complete C3 task

Instructions:

Present your final design and document any instances where you had to change your plans. This can also be a link to your final product or solution. Upload

Report abuse