BOM pcb carver

	A	B	C	D	E
1	material	#	Price		Notes
2	Hardware store		14,5		the items below are comprised in this price
3	gray cement	2kg
4	M4x1m threaded rods	2
5	M8x1m threaded rods	6			5 are actually required but you might lose a bit when cutting
6	M8 nuts	60
7	35.7*50mm with 8 or 12mm shaft 12V DC motor (high RPM)	1	6,69
8	coupler clamp stepper servo motor coupling D20L25 5x8x25mm	3	6		You should use rigid couplers not the springy ones
9	28BYJ-48 12V 4 Phase DC Gear Stepper Motor + ULN2003 Driver Board	3	8,49
10	sd reader	1	1,31
11	8mm*20cm rods	5	13,01		you will have to cut one in half or buy 4 20mm and 2 10mm
12	M3 hex socket scew and washer set	1	6
13	LM8 LM8UU linear bearing	12	10,14
14	Arduino nano	1	3
15	3.17 to 3.17mm coupler	1	2,65		the price is for 5
16	PWM Motor speed controller	1	10		You could easily either skip this or get a way cheaper one
17	PLA	2kg	25		It should take you less than 2 spools but more than 1, in bundles of 2 spools I can easily find them for 25€ on amazon
18	DC-DC step down module (12V to 5V)	1	1,79
19	limit switches 12x6mm	3	1,71		this is the price for 10 on aliexpress
20	relay module	1	1,11
21	12V 10 amp PSU (you should be fine with a bit more than 5)	1	15		I used a PC power supply, you can easily find them even for free
22	Bike Quick Release Skewer Springs	3	1,79		I've also tested stiffer springs with no improvement so these are the best to install and easiest to find
23	Strong Crystal Fishing Line PE Nylon 0.6mm	1 spool	1,59
24	heatset inserts	150	7,35
25	T8 lead screw 20cm lead 8mm	2	6,14
26	T8 lead screw 10cm lead 8mm	2	2,51
27	T8 anti backlash nut lead 8mm	3	3,64
28	ball bearing 608ZZ	3	2,69		the price is for 10
29
30	tot		152,11	euros
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33	PCB making supplies	#	Price		Notes
34	0.1mm engraving bits	10	8,42		I suggest using the ones with a spiralized point, they are more expensive
35	0.8mm drilling bits	10	2,69
36	Copperclad boards 7x10cm FR1	10	3,69
37	Solder mask	10cc	2,9
38	UV nail curing machine		5
39	printable transparent sheets		10
40	tot		32,7
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