Group assignment

*characterize your lasercutter, making test parts, that vary cutting settings and dimensions.

We measured using two materials.

One is cardboard, and the other is mdf.

We used these two materials to measure the kerf value and how power and speed affect it.

This is what I tested.
And the letters used in Fusion 360 are not converted to dxf,
but there are other ways, but I'm not familiar with it, so I made letters in the laser cutter program.

This sample has 16 test values and I thought I could get an average of the kerf values by measuring them.

s/p are the values of speed and power, respectively.

1.Cardboard

The thickness of the card board was 4.4mm when measured with a caliper.

At first, I tried to see how much it was shaved,
but because cardboard was paper, there was a risk of fire and I had to cut it.

As you can see, the empty spaces are cut off, especially the 10/100 part,
the corners are slightly burnt when you look back, also the 10/70 part is burnt down,
the 40/70 part was almost cut off.

This is the result of measuring the cut-off kerf and the uncut kerf.

power 10, 40 parts were measured at 0.1 mm, and 70 and 100 parts were measured at 0.2 mm.

2.mdf

In the case of mdf, we proceeded in a way that cuts the material because it is wood.
However, some sections were cut like a cardboard because of the risk of fire, and we thought that cutoffs would have similar results even if they were cut.

In the case of 40/40, the black color is seen on the upper side, and the upper side shows more power than other parts because of the power of the laser.

The other part also has a lot of upper part like 40/40 part.

When measured horizontally, 10/10 was measured as 19.9 mm and 10/100 was measured as 20 mm.

I measured the vertical value of the engraved parts and the measured values are as follows.
10/40 :2.25mm 10/70:2.3mm 10/100:2.35mm 100/100:19.85mm

3.Result

Even at the same intensity, they do not get cut off at higher speeds, and as the power gets higher, the kerf value increases.