mechanical

Sandbox assembly

Besides these instructions assembly section, the CAD source file of the Sandbox can be used as a guide for assembling the Sandbox.

You can open the source file with FreeCAD (free and opensource): tectoh.FCStd

We couldn't upload the step file because it was too large for github.

Step A: Assembly of the structure's lower base

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Parts

Components	Quantity
Aluminum profile Type B Slot 8 (30x30x1060 mm)	2 units
Aluminum profile Type B Slot 8 (30x30x740 mm)	2 units
Aluminum profile Type B Slot 8 (30x30x680 mm)	1 unit
Aluminum profile Type B Slot 8 (30x30x260 mm)	1 unit
Aluminum profile Type B Slot 8 (30x30x220 mm)	1 unit
Bracket Type B (30x60 mm)	7 units
Bracket Type B (30x30 mm)	2 units
M5x14 mm Screw	32 units
T-nut for slot 8 type B with spring (M5)	32 units
Washer 5 mm	32 units

Tools

• Allen Wrench 4

Step B: Cutout of the lower clamping board

Parts

Components	Quantity
Wooden Board (440x310x3 mm)	1 unit

Tools

• Hacksaw
• Keyhole saw
• Rasp

Step C: Placement of the lower wooden board

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Parts

Components	Quantity
Wooden Board (440x310x3 mm)	1 unit
M5x16 mm Screw	4 units
T-nut for slot 8 type B with spring (M5)	4 units
Washer 5 mm	4 units

Tools

• Allen Wrench 4
• Drill

Step D: Aluminum profiles's positioning to give height to the structure

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Parts

Components	Quantity
Aluminum profile Type B Slot 8 (30x30x90 mm)	5 units
Bracket Type B (30x30 mm)	5 units
M5x14 mm Screw	8 units
M5x16 mm Screw	2 units
T-nut for slot 8 type B with spring (M5)	10 units
Washer 5 mm	10 units

Tools

• Allen Wrench 4

Step E: Kinematic pairs's assembly

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Parts

Components	Quantity
Steel shaft Ø20 mm L500 mm	2 units
Shaft supports SH20/SK20	4 units
Lineal bearing 20 mm LME20UU	4 units
T-nut for slot 8 type B with spring (M5)	8 units
M5x14 mm Screw	8 units
M5x25 mm Screw	4 units

Tools

• Allen Wrench 4

Step F: Drive system's assembly

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Parts

Components	Quantity
Spindle TR12x3 mm	1 unit
90º flange bearing	2 units
Flexible coupling	1 unit
Trapezoidal lead nut for spindle 12x3 R	1 units
M3x14 mm Screw	4 units
M4x25 mm Screw	4 units
M5x12 mm Screw	2 units
M5x20 mm Screw	2 units
M6x12 mm Screw	4 units
Hexagonal Nut M4	2 units
T-nut for slot 8 type B with spring (M5)	2 units
T-nut for slot 8 type B with spring (M6)	4 units
Washer 5 mm	2 units

Tools

• Allen Wrench 4
• Allen Wrench 5

Step G: Gantry assembly

The gantry can be assembled in different ways depending on the experiment.

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Parts

Components	Quantity
Aluminum profile Type B Slot 8 (30x30x800 mm)	1 unit
Aluminum profile Type B Slot 8 (30x30x740 mm)	1 unit
Aluminum profile Type B Slot 8 (30x30x244 mm)	2 units
Aluminum profile Type B Slot 8 (30x60x980 mm)	2 units
Aluminum profile Type B Slot 8 (30x60x400 mm)	2 units
Bracket Type B (30x60 mm)	14 units
M5x14 mm Screw	56 units
M5x18 mm Screw	4 units
M5x40 mm Screw	16 units
T-nut for slot 8 type B with spring (M5)	76 units
Washer 5 mm	56 units

Tools

• Allen Wrench 4

Step H: Assembly of the structure's upper base

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Parts

Components	Quantity
Aluminum profile Type B Slot 8 (30x30x1060 mm)	4 units
Aluminum profile Type B Slot 8 (30x30x740 mm)	2 units
Aluminum profile Type B Slot 8 (30x30x240 mm)	1 unit
Bracket Type B (30x30 mm)	7 units
Bracket Type B (30x60 mm)	8 units
M5x14 mm Screw	46 units
T-nut for slot 8 type B with spring (M5)	46 units
Washer 5 mm	46 units

Tools

• Allen Wrench 4

Step I: Placement of the upper wooden board

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Parts

Components	Quantity
Wooden Board (1200x740x3 mm)	1 unit
M5x16 mm Screw	4 units
T-nut for slot 8 type B with spring (M5)	4 units
Washer 5 mm	4 units

Tools

• Allen Wrench 4
• Drill