A hook on a pulley for some sort of crane or something. Based on dimensions given in an old, undated book from Spain of technical drawing exercises.

This is a heel strap for a wheelchair to prevent the user's feet from sliding off the foot plate. It's designed to install easily with no tools required except scissors to trim the strap to length. The clips with snap on covers are 3D printed to fit off the shelf polyurethane toothed belting.

From the SketchUp model.

Partially assembled.

Temporarily installed on a chair. Ignore the dog hair.

Combined a Vray render with an AO export direct from SU24.

Experimenting with creating a vintage illustration style for my SketchUp models. The flywheel is based on dimensioned drawings in a textbook from 1897.

From an old book. SketchUp and Paint DotNet.

A model of what is probably the first micrometer ever made. It's dated England about 1776 and attributed to James Watt although evidence shows it likely wasn't made by him.

A larger version of this image is available here.

All the screws are made and holes threaded. 28 component definitions, all solids.

A machinist's model of a twin cylinder steam engine designed by Joseph Bernays in the 1870's. The original was displayed in Paris at the Universal Exposition of 1878.

Another in my series of machinist's models. This engine is powered by water, not steam. Water goes into the opening visible near the bottom of the engine and out on the far end. I believe the copper colored cylinder is just filled with air which gets compressed by the water and provides some pressure for exhausting the water.

For a scale reference, the flywheel on this model has a diameter of 159 mm.

Here's a grab of the illustration of the original full-size engine showing the valve arrangement

@nickchun you might try updating to the latest version of the Sketchucation ExtensionStore tool. The latest version is 4.4.1

Another two cylinder engine just for the fun of it.

A model done while waiting on dinner to cook. A pulley on a hook. This is based on dimensions in another edition of the technical drawing books from Spain.

Until such time as someone figures out and writes an extension to do that you can do it natively. I imported your first two images as images into SketchUp. Then select a random color from the native Colors collection and added it to the model. Under the Edit tab I selected the eyedropper to sample a color, named it, and then clicked on the Create New Material button.

Rinse and repeat for the rest of the colors.

@jcarterKBdesign As you found, changing the length of the components is scaling operation. If you think about the miters as triangles, you're scaling the triangle along one leg which changes the angle of the hypotenuse. Simple geometry.

In the case of your mitered door frame you would need to split the rails and stiles into three separate components, a middle section with square ends and then a triangular component for the miter at each end. Then the setup for the DC would involve scaling the length of the center section and moving one of the end components. That will keep the 45° miter with length changes.

If you don't want to see the seam line between the three components, hide the end faces and their bounding edges to make the rail or stile look like a single object.

I did a quick example for one rail. I painted each component with a different shade of gray to show there are three separate ones.

And with the overall length changed.

I needed to replace guides for the locking bars on some windows in the house. The OEM parts haven't been available for years so it was SketchUp and my 3D printer to the rescue.

An original that is close to neededing replacement.

My SketchUp model. I couldn't see any practical reason for the curvy bits or the notch so I simplified it which also made it easier to print.

And the replacement installed.

Modeled to go with a steam engine.

@flywheel try using the 3D dxf exporter instead of the 2D exporter.

I made a couple of exploded views just for fun.

Decided to do a simple render in Vray,

Not sure what took me so long but I finally modeled my grandfather's shop stool. The original is better than 65 years old. Brings back a lot of memories for me when I sit on it.

The original stool in its original paint.

The workbench is a Shaker-style bench I modeled for Fine Woodworking Magazine and the chairs are children's chairs designed by Dieter Gullert