Really frustrated:/ Whenever my SO is doing a project, for example: installing a new faucet or…

Really frustrated:/ Whenever my SO is doing a project, for example: installing a new faucet or changing a door knob. He gets so mad easily if its not going as planned. Then i help out and actually fix the problem and he doesn't thank me or anything. He gets even more mad. I know he probably wants to feel like the handy man rather than having his SO doing the job, but it still hurts when he doesn't even acknowledge how i helped in.