Parametric Dowel Nut (Barrel Nut) Holder

I often buy used furniture that is missing dowel nuts (aka barrel nuts). This holder allows me to use a standard hex-nut for the same function. Recommend printing these in a material with good layer adhesion such as PETG or PC. The model can be copied/modified how every you'd like and is found here: https://cad.onshape.com/documents/db5f93ae27ead7a6a1e6b5a8/w/af1f4397a5633b61ebd4ec80/e/38e8523b1d7b755a9274b952?renderMode=0&uiState=623eb9c82881b114c4fea9fb