I still dont quite get the refinance in BRRRR investing HELP

[Nicole Wood]

I've read articles, watched webinars and listened to podcasts however I still don't quite understand the Refinance part of the BRRRR strategy.

If I were to get a house for 60 k the ARV being 110k and put 20 k into it that leaves me 30 k in equity. refinancing out of that loan would pay off the old loan still only leaving 30k to reinvest using a heloc...this is the part thats confusing me because everywhere else they're saying you would get 70% of the 110k which makes no sense...can anyone explain this process a little better?? Please.