Week 9 - Attachment Feature Creation - Challenge 2
Plastic Product Design
Attachment features:
- Screw Boss

- Dog House


Figure 1: Screw Boss
T=Wall thickness of main Plastic Component.
W= Wall thickness of Screw Boss (40% of the nominal wall thickness of base 'T').
H= Height of Screw Boss (3:1 ratio to diameter of Boss).
Draft angle = 0.5 degrees on Walls of Boss (Inside and Outside).
Maximum Fillet radii 0.25mm.

Figure 2: Dog House
T= Wall Thickness of the main plastic component.
C= Wall thickness of Dog Hose at the intersection of main wall thickness 'T',
(40% or less of the nominal wall thickness of base 'T').
B= Height of Cutout (between 3mm to 6mm).
Tooling axis Creation
The tooling axis for screw boss is considered the same as the tooling axis of coin holder,
Please click/ browse on the link mentioned below for Tooling Axis Creation of Coin Holder
https://skill-lync.com/student-projects/week-8-challenge-4-coin-holder-design-124
Tooling Axis for Dog House
1. Create a point concentric to Screw boss
2.
a. Create a line, select Point- Direction by using the line tool.

b. Select Direction as Z-axis as it is normal to the inner face.

Draft Analysis
Screw Boss


The draft angle provided to screw boss is a minimum of 0.5degrees.
Dog House


The draft angle provided on the outer face of Dog House is a minimum of 1.5degrees.


The draft angle provided on the inner face of Dog House is a minimum of 0.5degrees.
Screen Shorts of Product:
Front View

Side View

Top View

Isometric View

Please click/ browse on the link mentioned below for Tooling Axis Creation of Coin Holder
https://skill-lync.com/student-projects/week-8-challenge-4-coin-holder-design-124