This is a customizer for making vacuum guards to prevent sucking up small parts. It can be used on it's own attached to the vacuum nozzle or an accessory can be attached on the other end. It can also make hose adapters without the honeycomb grid for attaching vacuum accessories to a hose with a diameter that's not compatible with the accessory. By default, the outer edges are filleted for comfortable handling.

The cover image shows several examples, but only the three models in the front are included. They all fit a standard 1¼ inch vacuum hose and may be just what you need. If not, you can easily create your own customized model by setting some simple parameters with sliders. It's fully customizable and one of the images shows a screenshot with all the parameters that can be adjusted. Note that although the code refers to the end with the grid as the narrow end, it can be wider than the other end as shown by the blue, purple, and pink models. The blue and purple models also fit a standard 1¼ inch vacuum hose and have been included.

The first photo shows my print in grey of the orange model in the cover image and a short test piece in white that I printed first to test the diameters. The second photo shows it between the vacuum nozzle and the brush attachment. It's a perfect fit between my 1¼ inch vacuum nozzles and accessories.

Running the Customizer

This download includes the .SCAD file to create the customized 3D printable models. You will have to first install OpenSCAD (free software) on your own computer to process the .SCAD file and present the customizer parameters. Download OpenSCAD and get started. For further details on running the customizer see DrLex's instructions on How to Run Customizer on Your Own Computer.

Alternative to Installing OpenSCAD on Your Computer 

Although it's highly recommended to use a locally installed version of OpenSCAD for customizing your own model, there are two alternatives if you can't or don't want to install the OpenSCAD software. 

1. This model is also published on the Thingiverse web site and the Thingiverse online customizer may be used to run the code on their servers. The customizer is old and clunky, and although it works fine, it provides a terrible preview interface. Beware that the Thingiverse web site went through some dark times and they weren't even processing their customizer jobs for over 2 years (July 10, 2020 to August 4, 2022). If you try to use it and your job is still sitting in the queue after several minutes, that probably means they stopped creating the customizer models again and your job is never going to be processed. It might just be really slow or may be only a temporary stoppage so check later or hope for the best and try again later.
2. There is a cloud based service at https://openscad.cloud/openscad/ that runs the code client-side in your browser. It doesn't support all OpenSCAD functionality so it's only useful for simple models such as this one, and even then it doesn't support using the customizer, so you'll have to modify the code to change the parameters.  It has a decent interface and runs the code a bit slower than a local OpenSCAD installation.