Has anyone BRRRR-ed using Solo 401k funds?

[Yumiko A.]

I've read that you need to get a non-recourse loan from a bank to fund rehab costs. Assuming this is doable, has anyone BRRRR-ed using Solo 401k funds, refinanced, and add the cash back to the Solo 401k? Then do it all over again? I know you won't get the cash in your pocket right now but it seems like a good way to grow retirement funds.

Thank you!