If you have a double-layer board with no plated-thru holes, sockets become a liability ... the intermittent, expensive things are a liability anyway. Dispense with IC sockets and solder them directly to the board and you can solder a lead from both sides if necessary. If you absolutely must use a socket that needs double soldering, the old Molex Soldercons were one iffy way of handling the mess, but I don't know that those are available anymore.
Avoid RS for your stuff. They're 'way too expensive.
Kelvin Electronics has always been a good source for PCB chemicals and other supplies and they have attractive prices, also. Trouble is, I don't know if they will sell to anyone but schools, which really sucks.
Hosfelt Electronics used to sell the carbide resharps, but you could buy all of them in one size rather than having to deal with an assortment like Harbor Freight. I use a Dremel tool in a drill press stand with excellent results. Spins the bit at a few million RPM for great holes. BE DANGED SURE TO WEAR SAFETY GLASSES/GOGGLES WHEN DOING THE DRILLING OPERATION since you never know when a bit will break and send a shard toward your face.
Dean