Immediate slipping. Maybe due to thickness of slice being bigger than height of mill

Immediate slipping. Definitely due to thickness of slice being bigger than height of mill

Cutting: Perfect cut. No slipping. Due to the thickness of the slice, we saw it necessary to only drill 70% through the slice. We wanted to try drilling from both sides, but to do that we need to drill deeper through so that we are able to see the cuts.

Extraction: No extraction was performed as we only cut 70% into the slice.

Cutting speed: 0.2 (x, y), 0.5 (z)

Other: After 2 failed attempts due to the slice being too thick, we decided to reduce the cutting height and only cut 70% through the slice.

Depth: 14

Immediate slipping. Maybe due to too high milling speed.

Cutting speed: 0.4 (x, y), 0.5 (z)

Cutting: Some good cutting, but once the slice thawed, it stopped working. The slice lost grip of the plate, but then reattached later in the procedure. 

Cutting speed: 0.2 (x, y), 0.5 (z)

Other: The cooling system completely failed. This led to the slice thawing quite quickly, as hot air was drawn through the slice.

Aborted

01:01

Cutting: No cutting. Slice lost grip immediately. First and last row of holes are not covered. That could be a reason. Many holes also seem clogged. This could be a reason.

Cutting speed: 0.2 (x, y), 0.5 (z)

Other: We will clean the holes in the vacuum bed and see if it improves the grip.

Aborted

00:44

Cutting: No cutting. Slice lost grip immediately. It did not help cleaning the vacuum holes. 

First and last row of holes are not covered. 

Cutting speed: 0.2 (x, y), 0.5 (z)

Other: Maybe the slice is simply too small or too slippery.

Aborted

00:47

Cutting: No cutting. Slice lost grip immediately.

Aborted

01:36

 Cutting: No cutting. Slice lost grip immediately. We tried cutting not as deep and at half speed, but to no avail.

Cutting speed: 0.1 (x, y), 0.5 (z)

Cutting depth: 15

Cutting: Even though the sliced almost thawed, the quality of the cut was still good.

Cutting depth: 14

Power: 100 (instead of 50)

Other: The increased time spent sucking our air has been increased due to the drilling speed being 0.1. This sadly pushed us beneath the -10* goal. Due to the slice being relatively thawed we became curious to whether the temperature sensor was right, so we check with an infrared thermometer, which said the plate was 0*. This definitely needs some looking into later.

Aborted

00:45

Cutting: No cutting. Slice lost grip immediately. This slice was slightly thicker, so we think the mill head may gone too deep and crashed

Cutting depth: 16 

Cutting speed: 0.1 (x, y), 0.5 (z)

Aborted

00:46

 Cutting: No cutting. Slice lost grip immediately. The slipping may be caused by kidneys being too hard and small, thus giving increased resistance and being suctioned less to the bed. 

Cutting depth: 14 

Cutting speed: 0.2 (x, y), 0.5 (z)

Cutting: Same result as the successful sample 3 test. Milling went without issues, but the cooling box is not able to keep up. This could very well be due to our styrofoam box having lost a lot of ice, and our new tubing system being a lot less effective.

What we know for sure is that kidney is millable at 

Cutting depth: 14 

Cutting speed: 0.1 (x, y), 0.5 (z)

Cutting depth: 15 

Cutting speed: 0.1 (x, y), 0.5 (z)

Although the end temperature is the lowest yet, it is a lot more accurate to the temperature in the freezer. There is still a lot of frost on the drill-bed.

It is also worth mentioning 

Other: It seems that we may have been too hasty with our testing. As the temperature sensor has been at the bottom, the temperature reading has probably been misguiding. When we started testing our freezer was full of really cold air. As we went on testing, the cold air was sucked out and replaced. But as the tubes froze, less and less cold air went in and more and more cold air disappeared from the box, leaving only a little reservoir below the suction area where our sensor was. 

Cutting: Slightly off calibration. Otherwise perfect cut. No slipping.

Extracting: So far the easiest one to remove.

Easy difficulty removing sample 1

Easy difficulty removing sample 2

Cutting speed: 0.2 (x, y), 0.5 (z)

Cutting height: 16

Other: The temperature dropped to -10, but then sank to -14.6 This is probably due to this being the first test of the day and the tubing needed some time getting cold. 

The milling bit broke. After it was done drilling out sample 2, it went down into the bed, instead of up. We are really not sure why it did this. Nothing in the settings indicate why it did this.

-12.4

(Slice measured to be -17)

Aborted

4:14

-7.0

(Slice measured to be -20)

Cutting: Slightly off calibration. Otherwise perfect cut. No slipping.

Cutting speed: 0.2 (x, y), 0.5 (z)

Cutting height: 16

Other: Mill bit broke. Drove into the bed.

-13.3

(Slice measured to be -18)

12.25

-3.5

(Slice measured to be -20) 

Cutting: Slightly off calibration. Otherwise perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.2 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-11.1

(Slice measured to be -18)

-8.3

(Slice measured to be -21)

Cutting: Perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.2 (x, y), 0.5 (z)

Cutting height: 15

-3.2

(Slice measured to be -17.7)

Cutting: Perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.4 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-11.6

(Slice measured to be -17)

-4.3

(Slice measured to be -17.5)

Cutting: Perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.4 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-11.0

(Slice measured to be -22)

Cutting: Slightly off calibration. Almost perfect cut. Seems to have slipped during the first cut, but then been stuck the remainder of the procedure. Could have something to do with frost.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.2 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-12.5

(Slice measured to be -16)

-10.1

(Slice measured to be -21)

Cutting: Perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.4 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-6.4

(Slice measured to be -18)

-5.9

(Slice measured to be -19)

Cutting: Cutting: Slightly off calibration. Otherwise perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.6 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-8.7

(Slice measured to be -16)

-5.0

(Slice measured to be -17)

Cutting: Perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 0.8 (x, y), 0.5 (z)

Cutting height: 15

Other: 

-6.5

(Slice measured to be -14)

-3.5

(Slice measured to be -16.5)

Cutting: Perfect cut. No slipping.

Extracting: No extraction was performed, as we only cut halfway through.

Cutting speed: 1.0 (x, y), 0.5 (z)

Cutting height: 15

Other: