Apprentice needing advice
Summary: I am seeking advice from someone regarding my pay and what is normal to expect for someone of my experience.
About a year and half ago, I got a fantastic job working as an apprentice for a small, custom staircase shop. A couple employees have come and gone, but I have been there the longest, and have learned tons. My two other coworkers joined us a couple months ago, and my position has unofficially evolved into assistant shop manager. My boss gives me the low down on each job, and its my job to make sure the other two employees have a task to do if one hasn't already been assigned. I am trained to use CAD to extract measurements of his drawings and to write up how much board feet we need to order. I am comfortable working/maintaining a table saw, bandsaw, planer, router, joiner, shaper, chisels, and handsaws. I can make my own jigs if I need to and can make a traditional staircase with ease, as well as custom trim, framing, curved handrails, curved/elliptical forms, and some other obscure small details.
I have never worked in an environment were you negotiate pay, and I don't know anyone who has worked in a shop like this to give me advice for what is normal for an apprentice. I love this job a lot and hope to stay with them for at least 5-10 more years, if not eventually buy the company when he retires if possible. I know that I am valued in this company, and I think it is time to ask for a raise, but I'm sure there are better ways than others to negotiate.
I make 15$/hr.
I appreciate any advice.