Funnel for StopLossBags

StopLossBags sells a silicone funnel but it does not stay attached well enough to use with viscous finishes like tung oil that take a long time to drain into the bag. My funnels screw onto the threaded cap and include a tab that allows you to clamp the whole assembly to a table, conveniently leaving both of your hands free for less-messy pours.

I've included 3 sizes that I think should work with most use cases, but as with most of my designs, you can find the configurable source CAD here at onshape. You can use the configuration there to adjust the height and diameter, as well as whether or not the funnel include the rim, handle, and “side wings” (these allow clamping sideways, which I thought would be more helpful than they actually are … they're left in more as a curiosity than something actually useful).

You might also be interested in my Replacement Cap for StopLossBags model.