DIY Rotating Chair Assembly

The Construction Details

The entire DIY Project requires minimal materials to construct and will only require a beginner to average skill and knowledge of manufacturing to complete successfully

(Difficulty Rating: 3 out of 5)

(All Download Links are available at the end of this article)

Wooden Board Size:
1830mm x 2750mm x 18mm

(x2 Boards required, the type of wood used could be Super woods, Chipboard etc. the choice and final finish of the wood material is up to the individual Maker e.g. paint, varnish etc.)

Machining the Wooden Sections

All relevant toolpaths are posted and can be run on the CNC Router, there are no special instructions for the machining, the board thickness is 18mm and the tool used for the Machining is a standard 10mm End Mill. The choice of wood materials is up to the individual Maker as long as the board size is 18mm (Thickness) x 2750mm x 1830mm (bed size). The DXF files of the wooden sections are also being supplied so the advanced Maker can use these DXF files to modify the work pieces and the tooling as they would like it required to be

Steel Frame Materials Used

The type of steel used and the construction of the frame can be customized by Expert Makers only, except for the 25mm Radius Round Bar used as the main support beam, but it would be recommended for Beginner and Intermediate Makers to stick to our recommended materials list

The exact list of materials required for this DIY Project are as follows

Total of 5400mm of 25mmx25mm Square Bar is required:

  • Bottom Support Bars: 775mm x2 (1550mm)
  • Outer Side Support Bars: 545mm x4 (2180mm)
  • Inner Side Support Bars: 142mm x4 (568mm)
  • Lower Connecting Bar: 1100mm x1 (1100mm)
  • Round Bar: 1150mm x1
  • Angle Iron: 100mm cut in half (x2 - 50mm Pieces)

Metal Frame Dimensions

Below is an overview of the dimensions of the metal support structure of the chair. Cutting, grinding and welding the parts will be required to complete the Metal Frame

Frame Dimensions

To make sure that the Support Structure is the correct width, the Maker must construct each side support structure of the frame completely, before joining both sides with the bottom support bar (1100mm), the 50mm Diameter Round Bar is simply bolted onto the frame on the Angle Iron sections to complete the frame

25mm x 25mm Bar used for the Main Frame construction

Total length of 5400mm is required as shown below to complete the Main Frame

Frame Construction

25mm Radius Round Bar (50mm Diameter): (Total length of 1150mm is required as shown below)

Round Bar

50mmx50mm Angle Iron (Total length of 100mm is cut in half – 50mm length each side)

Angle Iron

Getting the Frame Together

Start the frame from the sides, weld the Parts 1 & 2 (545mm) to Part 3 (50mm Angle Iron) as shown below, Part 4 can then be placed and cut at an angle along with Parts 1 & 2, then welded to Part 1 & 2 to complete the one side of the frame

Joining The Frame

This must be repeated for the second side of the frame construction.

Positioning of the Inner Support of the Frame

Once the side frames are completed, take a wooden section and place it on the round bar support, then brace the round bar support to the two outside frame sections, place the Inner Support onto the frame and ensure that the Wooden Chair section sits correctly on the frame as shown below

Position Top

Rotate the wooden chair section into the table position to ensure that the “table top” is level as shown below. Once the support beam is placed correctly then weld it into place to complete the frame.

Position Bottom

When the frame is welded into place the assembly of The DIY Rotating Chair can be done, an assembly video has also been published to show how the chair is assembled.

Download The Project

CAD Models:
These are the 3D CAD Models of the DIY Rotating Chair

ArtCAM File
STL Model File
Parasolid Model File

DXF Files
These are the vector files of the DIY Rotating Chair

If you only want to machine the project as is, then only the G-Code files are needed for use on your Router

G-Code Files
The g-code is written with a Generic G-Code Post Processor via ArtCAM

The Assembly Video

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