Can I put a 3kg spool on the spooler?

No, the largest spool the Filabot Spooler can coil is 1kg. However, the Filabot Spooler MAX can handle a maximum of 10kg.

Here are the specs for our 1kg Spool:

Flange	Traverse	Barrel	Arbor Hole
8"	2.43"	3.75"	2.05"