Re: Heating PEX Copper Stubs
You'll find it a lot easier to just buy some stops that have compression fittings on the inlet -- 1/2" copper is 5/8" outside diameter.
Chances are the copper stub has a 90-degree bend just inside the wall, so there's probably about 8" from where it enters the wall to where it meets the PEX. PEX can withstand quite a bit of heat, so long as there's no stress on the pipe while it's hot.
(When I was an apprentice plumber, I learned that for a certain brand of PEX, if it was kinked, you could restore it to full strength by heating it until it turned clear, straighten it out, then let it cool. This method is approved by the manufacturer when performed by a certified installer. I can't say that you won't void any warranties or cause a flood; I tell you that for your information.)
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.