This former a16z partner and solo VC has backed 6 unicorns. Now he's raised $50 million to invest in hard tech Zal Bilimoria is the sole partner at Refactor Capital. Refactor Capital Refactor Capital, the firm founded by solo VC Zal Bilimoria, just closed a $50 million fifth fund. Bilimoria said he raised the fund in five phone calls and capped it at $50 million to stay solo. Bilimoria said staying independent keeps him close to founders, who call him "Better Call Zal." It only took solo venture capitalist Zal Bilimoria five phone calls to raise his latest $50 million fund. The former Andreessen Horowitz partner, who left the firm a decade ago to start VC firm Refactor Capital, said the new fund brings his total assets under management to nearly $300 million and will allow him to keep writing $1 million to $2 million checks into pre-seed and seed-stage startups. Bilimoria describes himself as a generalist hard-tech investor, with an interest in startups tackling big physical-world problems.…