I like my method for paraclapping, it makes it quick and easy.
Take 2 spools, take 2 plastic ziplock baggies, put one spool in one bag and pull the wire out of the bag.
You can seal them 1/3 of the way to ensure the spools stay in the bag while using them.
Set both baggies standing up inside a small box and set at your feet.
Attack both wires to you core, make sure they are side by side then pinch about 2 inches from the core and slide your fingers down them until your about 6"-9" away from the core.
WASH YOUR HANDS WITH SOAP AND WARM WATER, this makes the wire slip through without snagging.
Start your drill and hold at JUST FORWARD of 90 degrees, try using the smallest amount of tension you can while still keeping the wire parallel and tight, the changes in tension may pull the wire downwards and this changes the angle of the paraclap at a microscopic level...this is one variable that can cause weaving and the more it happens the more noticeable the weaving will be when fusing.
Slide the box holding the spools as you go down your wire with your feet, when you done just cut the strands just above the tops of the baggies and they will remained spooled and ready for next time. Cut one strand on the core shorter than the other, this makes for easy removable of either strand from the core.
You can Parafuse the same way, the angle and tension is the main factor in it all working. USe 36g as one strand in your original paraclap (Example: 40g + 36g Paraclap) and when fusing the 36g gap use 2x40g.