Materials available for your design are
6061 Aluminum Bar: Diameter: 3, 1.8 , 1.25, 1, 0.88, 0.75. 0.5, 0.37 inch
6061 Aluminum Flat: 1.5, 0.5, 0.38, 0.25, 0.13
303 Stainless Steel Sheet: 0.03
303 Stainless Steel Rod: 0.37 inch
Copper Sheet: 0.26, 0.63 inch
Bronze Rod: Diamter 1.25, 0.5 inch
Bronze Sheet: 0.08 inch
Acrylic: 1/4 or 1/8 inch
Polycarb sheet: 1/16 inch
Rubber sheet: 1/16, 1/32 inch
HDPEF: 1 inch
Delrin Sheet: 1/4 inch
Glass slides, regular microscopy slides, BK7
3D printer filament: PLA & Flex
Machined metric screws:
M3: Phillips 12, 10 mm long
M3: Nut, Nylon Lock Nut
M3: Hex Countersink: 4, 6, 10, 12, 16, 20 mm long
M3: Hex Socket, 20, 16, 12, 10 mm long
M2: Hex Countersink: 18, 12, 10, 8 mm long
M2: Button Head: 4, 6, 10, 16 mm long
M2: Nut and Nylon Lock Nut
M2.5: Button Head 4mm long