Newbie with question how to model a barbed tubing coupler

chris_rose989

I'm a real newbie with Onshape and CAD in general. I need to design a custom part that will couple two pieces of plastic tubing together where each piece has different inside diameters. I want to put barbs on the coupler to help retain the hose to the coupler, like this CCT1607B - Honeywell CCT1607B - 1/4" Barbed x 1/4" Barbed (brass) Plastic Tubing Coupling (supplyhouse.com)
I have no idea of how I should design this.
Can anyone provide me with some advice of how to start the model?

Thank you

GWS50

You could try having a look at McMaster-Carr

https://www.mcmaster.com/products/tube-fittings/tube-fittings~/

robert_scott_jr_

A nice project to attempt as a new user. The part you describe screams Revolve. Create a sketch of your part's profile (as viewed if the part were split along it's length). First, create a centerline that will be used as the Revolve axis and reference applicable dimensions of the profile from that centerline. You will only have to sketch half the profile (referenced to the centerline). Google Onshape Revolve to see how the tool works.
 
A good exercise to learn from. However, I would be tempted to download two established part models of the two different sizes and marry applicable elements of the downloaded sketches together.

= Scotty 

GWS50

Here is a rough example of one way to make a start. There are many ways to approach this.
Also have a look at the learning centre, which has excellent video instruction and is very well laid out.

https://learn.onshape.com/

https://cad.onshape.com/documents/e9da086fde530243dedd9c55/w/0a7b9a5093d7a077300f2616/e/3f5a318bd9f372ea1b1d1a31