Units 19-20 Whitworth Road

Washington, NE37 1PP


Mon - Fri 8.30 - 5.00

Saturday & Sunday CLOSED


Sales Department

Units 19-20 Whitworth Road

Washington, NE37 1PP


Mon - Fri 8.30 - 5.00

Sat & Sun CLOSED


Sales Department

Welcome to part one in the Radecal Learning Academy series – do you need to know how to produce a simple staircase, folded composite panels for signs, stencil cut panels and much more?

We at Radecal can help you create new products which can be used within your business.  We all know how difficult it can be for first time machinery buyers to hit the ground running and start producing products for sale, this is where we can help.

Project number 1

How do I make a staircase stringer on a CNC Router?

Why not take your first step into staircase manufacturing with this tutorial. We can show you how to produce simple stair case stringers with your CNC router. Let’s look at a simple tutorial for you to follow.

Step 1:  Prepare your project in Vectric V-Carve Pro or your favourite CAD drawing package such as Staircase Designer or AutoCAD.

Before we start anything we need to prepare the settings for the job in V-Carve Pro (this is material dependant,  such as thickness and the size of your material to be used)

Job Type:  This would be single sided – no need to process this job on the flip side of your material.

Job Size:  What size is your piece of material?  In this instance this sheet is 750 x 2000 mm with a thickness of 28 mm. You can use many different materials such as oak, birch or plyboard to produce your staircases, although you could prototype using MDF which is much cheaper.

Z Zero Position:  This is where the machine takes it’s Z height from – we choose material surface.

XY Datum Position:  You have the option to pick where the job starts on the material and use an offset should you wish too.  Here we have picked bottom left.

Design Scaling:  This option is not required in this project.

Modeling Resolution:  This is the resolution that the 3D representation uses in demo and toolpath previews. You can view your staircase stringers in 3D and check for any errors on your drawing.

Appearance:  This is purely there to give you a basic representation of the material you will be cutting – or near enough as.

Once you have set up your job you will be ready to move onto the next step of of your staircase stringer project for CNC routing. 

The file supplied for you in this tutorial can be modified to suit your needs.  Once you have the drawing imported into V carve Pro you can then move onto the next step – picking the relevant tooling and applying toolpaths.

Step 2:  Pick your tool & apply toolpaths.

This next process assumes you are using a tool such as a 1/2″ mortice compression tool.  We used a basic tool path for pocketing the rebates and a profile toolpath for cutting out the actual stair stringers on the cnc router.

Please see below for our tool selection:
As you can see we are using a 1/2 ” compression tool for the task in hand and the tool geometry shows 12.7 mm diameter.

Our cutting parameters show a pass depth of 6mm (for our rebate pocket), this is the depth at which your tool will pass through the material in one shot.  You can choose this to be whatever figure you require beware: this must not exceed your spoil board thickness otherwise you will be going straight into your matrix bed.

Step over is the amount of travel the tool uses to pocket out your material.  In this instance we want the tool to create a nice smooth finish on the material.  Bigger steps result in rougher finishes over smaller steps.

Speed and feed rates have been set using the recommended parameters from the tool manuafacturer.

Step 3:  Process your material on the CNC router.

Follow your usual cnc workflow on the machine that you have.

Want to download the V-carve file?  No problem, please click the link below to download the Staircase Stringer file for you to use in your projects.  Software used in this tutorial Vectric Aspire (same applies for V Carve Pro)


Why use a CNC Router  |  What type of tooling to use for CNC Routing?  |  Vectric V Carve Tutorial – How to create a simple offset