Just like building an airplane, performing brain surgery, or any other profession.  

Senior doc may do the most complicated parts of the heart surgery, while jr. doc may open up the patient and stitch them up....relatives might be trained to change dressings, etc...Trying to get bypass surgery down to $2000/ all in.   

You said "blue boxes" so it's plastic junction boxes and they are typically installed say 1/2" proud of the stud face, the rotozip would need to hit the OUTSIDE of the blue box and go all the way around. 

And DO NOT let them put in an above ground pool either (unless it's one of the $20 plastic ones from Walmart). 

I've also just learned about inserting a new plastic pipe inside the main and epoxy lining all the pipes.

I had surgery on March 21st, and I was out from work for about a month.

Hi Bill,Brain surgery is riskier for a Heart Surgeon than it is for a Brain Surgeon.As Tony Soprano would say; "Capiche?"

Yes, he had LIVE exposed wires twisted together with no plastic cap hanging in his shower for years.   

After this was done we put down 14mm plastic under the house as a moisture barrier.We dug a French drain around the front of the house back to the creek to help with any moisture issues under the house.While we were under the house we also replaced all the plumbing with brand new pipes.Both bathrooms have been completely renovated with the master getting a full custom tile shower and the other bathroom getting a soaker tub with custom tile surround.

Paper or plastic?