Table 3.

The temperature change during drilling of holes for all tested materials. Materials were dried before drilling. A total of 15 wells were made in each material. The difference (ΔT) between the highest temperature obtained in the drilling process and the initial temperature of the analyzed surface was calculated for drill 1 and drill 2. Standard divination (SD) was also calculated.

	Temperature Increase during Cutting with a Drill
Sample Number	Commercial Model		Model 1 (700 g PC/5.0 g PO/17.5 g Talk)		Model 2 (700 g PC/5.0 g PO/7.0 g Talk)		Model 3 (700 g PC/5.0 g PO/3.5 g Talk)		Model 4 (700 g PC/2.5 g PO/7.0 g Talk)		Model 5 (700 g PC/2.5 g PO/3.5 g Talk)
	ΔT drill 1 [°C]	ΔT drill 2 [°C]	ΔT drill 1 [°C]	ΔT drill 2 [°C]	ΔT drill 1 [°C]	ΔT drill 2 [°C]	ΔT drill 1 [°C]	ΔT drill 2 [°C]	ΔT drill 1 [°C]	ΔT drill 2 [°C]	ΔT drill 1 [°C]	ΔT drill 2 [°C]
1.	1.0	4.2	0.3	1.9	0.9	2.7	1.4	3.1	0.8	2.6	1.2	1.8
2.	1.4	3.3	1.0	3.3	1.5	4.3	1.7	3.8	1.1	3.3	2.2	5.1
3.	0.7	9.0	1.8	3.9	1.0	7.4	2.9	4.0	1.3	3.1	2.1	6.6
4.	1.6	14.6	1.6	4.2	1.6	4.9	1.8	3.9	1.5	3.9	2.1	4.0
5.	1.2	7.7	1.6	5.2	4.7	8.2	1.5	3.9	1.5	3.0	1.9	4.8
6.	0.4	6.4	3.1	6.9	4.6	8.5	1.8	4.3	0.1	2.6	3.9	5.0
7.	0.6	6.8	3.4	3.6	4.9	6.9	2.9	3.4	1.7	3.0	1.8	4.9
8.	0.8	6.4	3.3	7.2	5.2	6.3	2.5	3.7	1.4	3.1	5.8	7.4
9.	1.3	7.9	3.2	5.2	5.1	10.9	2.2	3.9	1.6	3.6	3.4	5.4
10.	1.7	5.1	2.9	5.4	5.3	8.7	3.0	4.1	1.0	3.3	4.0	5.1
11.	2.4	7.0	3.5	3.9	4.4	9.0	3.6	5.0	2.4	3.5	4.0	5.1
12.	2.4	16.5	1.0	4.6	4.0	8.8	3.4	7.6	2.4	3.7	2.7	4.1
13.	6.6	13.5	3.0	6.2	5.9	5.6	3.7	5.2	1.6	3.9	3.6	5.1
14.	6.3	15.1	3.6	4.4	4.4	8.3	5.9	5.0	1.9	3.8	4.6	5.6
15.	6.1	14.4	3.1	4.8	5.1	8.1	4.4	14.1	2.6	3.7	3.8	5.5
Average	2.3	9.2	2.4	4.7	3.9	7.2	2.8	5.0	1.5	3.3	3.1	5.0
SD	2.1	4.2	1.1	1.3	1.7	2.1	1.2	2.6	0.6	0.4	1.2	1.2