[Woodcarver] split mandrels and sanding cones - again

[Vic & Cynthia Hamburger]

Hi Gang,

Thanks for all your comments about the split mandrels and sanding cones 
from my previous question.  Unfortunately, I immediately stopped 
receiving the digest format each day so only saw your answers tonight 
after getting the last few days of postings.

What I have already is the split mandrel model M23 from Foredom, as well 
as the spiral sanding cones in several grits.  What I can't do is mount 
those sanding cones onto the split mandrel.  The sandpaper will not 
slide easily into the slot of the mandrel.  No one really addressed how 
they mount these sanding cones, can anyone help? (without waking 
sleeping Big Dogs?? LOL!!

Thanks much!!

Vic H