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Stand.md 5.68 KiB 
title: 9. Stand Design And Fabrication
date: 2024-04-11

After finalizing all the Housing Part and the needed to have every thing working as needed, Now I need to design and fabricate the stand for the housing to sit on and also enclosure for the PM2.5 Sensor --> This Is why I have decided to build this part.

This part needs to be simple and compact, able to carry the housing piece and contain the PM2.5 sensor without any complications.

Let's Start designing this part

  • I will use Also ONShape to design --> For more Information about the process of designing using ONshape Please refer to this LINK.

  • I will build My design to look rounded as my Main piece so I will go with cylindrical shape.

  • Now I will start a sketch and I will draw a circle with 50 mm diameter.

Sketch circle

  • Then I will Extrude this by 5 mm to work as a base for the entire model.

Extrude Base

  • Then I will sketch the base of the sensor (PM2.5).

PM sensor dimension

I will use this sketch from the Sensor data sheet as a reference.

  • I will have the sensor in the vertical position.

Sensor Dimension

  • Then I will extrude to include the height of the sensor.

Sensor Height

Here I have added 0.5 mm clearance to make sure the sensor will fit but also will be tight so it wont fall if the stand is carried.

  • Then I will extrude remove the back side of the shape to insert and remove the sensor from this side.

Sensor gate

  • NOw I will use the back of the shape to sketch the ventilation of the sensor.

Sensor ventilation

  • THen I will Extrude remove the sketch.

Sensor ventilation extrude remove

  • Then I will sketch and extrude the top of the sensor.

Sensor top sketch

Sensor top sketch extruded

  • Now The Sensor Enclosure Is done and I need to think of a shape that can hold the main housing piece.

I had a lot in mind to sketch but nothing was reliable and make sense to me because as always I want something simple and easy to build.

So I thought of having a half circle that holds the housing, another option was two sticks and holding the piece as a fork. but nothing was enough for my mind to build.

I took a break and then I remembered (Iron man and his glowing heart 🤣) --> So I decided to have the top part to look as a hand and this piece is contained in this hand.

  • Lets build the hand.

  • So I started a sketch on the top of the sensor container piece.

Sketch of the hand

  • Then I will extrude these parts.

Sketch of the hand extruded

Sketch of the hand extruded 2

  • Then I will Sketch a spline on one of the Fingers 🤓 to be then revolved (remove).

Spline Sketch

  • Before I revolve remove the spline I will reduce the height of the big finger 😅.

MAin finger

  • Now I will revolve remove the spline shape.

Revolve remove

Here we go the Stand Is ready NOW.

Design Is DOne

  • Now Lets Fabricate the STand Using the 3D printer.

  • I will use Cura to slice the file.

Slicer settings

Slicer settings

Here I will use 0.2 layer height and 10 % infill but I will use support to handle the 90 degree overhang I have.

Slicer estimation

  • NOw this print will take 6 hours which is a bit long for me.

  • Lets go ahead and print it.

More Information about how to prepare the printer please refer to this LINK

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Here We go the Stand Is ready

Stand DOne

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Alhamdollelah All what I need is now Done and In a perfect condition as I want.

Raw Files

STL
IGES
STEP
OBJ
ONShape