If you have good credit (over 720) you are better off not doing it.
With your age most of your 401k is probably in growth and income mutual funds. The way they accumulate wealth is pretty simple. They pay dividends that reinvest and buy you more shares. When you take a loan out, on top of losing potential share price increases, you lose your dividends and stop accumulating shares.
Think really long term. 401k money is for retirement. Any time you mess with it, you just pushed your retirement back.
Only in very extreme (near emergency) circumstances should 401k money be borrowed against, pulled out, or the like.