Computer-Controlled Cutting

Group assignment: lasercutter test part(s), varying cutting settings and slot dimensions

Introduction

There are two approaches setting parameters to working the laser machine:
1. Working slow with a low intensity:
-Will achieve a clean cut of the material
-The cutting angle will be secondary and imperceptibly
-The working time of the machine will be longer
-The thickness of the laser beam will be minimal
2. Working fast with a high intensity: -Will result a sooty cut
-The cutting angle will be noticeable
-The working time of the machine will be shorter
-The thickness of the laser beam will enlarge

Testing

There are two method testing the material tolerance (the thickness of the laser beam):
1. Creating a ruler of slots in which the widest slot is wide as the material thickness, and every next slot is a 0.05 mm narrower

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A lasercutter test for a cardbord MTM 1.4 mm
2. Cutting a 10*10 mm square and measuring the outcome total ratio
By calculating the difference part two will give us the laser beam thickness

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Testing the tolerance of different material

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Notes:
In a machine with two separate engines for the X axis and the Y axis, each axis should be tasted
Also there's a importance to the material structure, for example cutting plywood with or against the fibers


Individual assignments:
1. Using the Vinylcutter

Cutting a vinyl sticker for a mailbox using the ‘Silhouette Cameo’ vinylcutter

First Step: creating a new Illustrator project - CAD sticker


Working process:
***Type on path***
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***Object>Shape>Convert to Shape***

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***Select the Text>Right click>Create Outlines***

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***Select the Outlines>Object>Ungroup***

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***Select the Letters>Object>Path>Outline Strock***

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***Select the Path>Righr click>Release Compound Path***

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Second step: Importing the file and defining the fabrication setting

There are three parameters needed to be settel:
blade depth, cutting speed and thickness

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Third step: The Executive Step


Removing the negative

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The Mailbox

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2. Creating a Parametric Press-fit Kit

My goal on this assignment was to experience a new software, as i have a previous background in Grasshopper, i turn to FreeCAD. In order to achieve this i used a press-fit kit existent design, GIK by Neil Gershenfeld and focused on learning

Working Process:
Sketching on FreeCAD a parametric design parts for the press-fit kit, using a constraints system

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Spreading the press-fit kit parts on a layout for cutting and exporting the file to the machine software

Setting the machine cutting values

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The Final Product

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survived another week...