Has anyone ever used their primary homes equity as collateral?

[Franklin Nunez]

I haven't been able to get a heloc because I don't have 2 years of self employed tax returns. I want to use the heloc to put towards the downpayment for an investment property. Ive heard of people using their existing property as collateral. How are these 2 methods different? I have over 150k in equity is collateral an option?