Computer-Controlled Cutting

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

There are two approaches setting parameters while 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 achieve a clean cut of the material
-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

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 0.05mm narrower.
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A laser cutter test for a cardboard MTM 1.4mm

2. Cutting a 10*10mm square and measuring the outcome total ratio. Dividing the difference to half 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 an importance to the material structure, for example cutting plywood with or against the fibers.

individual assignments:
-using the vinylcutter

cutting a vinyl sticker for a mailbox using the ‘silhouette cameo’ vinylcutter

Srep One:

creating a new Illustrator project - CAD sticker

***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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Srep Two

importing the file and defining the fabrication setting.
Three parameters should be settled: blade depth, cutting speed and cutting thickness

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Srep Three

result
cutting
removing the negative
placing the tracer
Sticking

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-creating a parametric press-fit kit

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

Srep One:

csketching on FreeCAD a parametric design parts for the press-fit kit, using a constraints system

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Srep Two

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

Srep Three

setting the machine cutting values

Srep Four

the press-fit kit

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