How to Stuff Amigurumi So It Holds Its Shape
Stuffing is the step people rush, and it is the one that decides whether a finished toy looks like a shop piece or a homemade one. The instructions in most patterns say “stuff firmly” and stop there, which is not much help when the result is lumpy.
Firmly means firmer than you think
A correctly stuffed amigurumi head should feel like a slightly under-inflated tennis ball. Press it with a thumb and it should give a few millimetres and come straight back. If your thumb sinks in, it is under-stuffed, and the head will develop a flat side within a week of being on a shelf.
The failure mode people fear — stuffing showing through the fabric — is almost never caused by too much stuffing. It is caused by a hook that is too large for the yarn. Amigurumi is worked one to two hook sizes below the yarn band for exactly this reason.
Small pieces at a time
The single biggest cause of lumps is stuffing in large handfuls. Fibrefill compresses unevenly, so a big piece pushed into a small opening becomes a dense core with soft gaps around it.
Take pieces about the size of a walnut. Push each one to the far side of the cavity with the blunt end of a hook or a chopstick, and only then add the next. Work from the furthest point back towards the opening.
Where to be firm and where not to
Not every part wants the same density.
Heads: very firm. They are the largest sphere and the most visible, and a sagging head ruins the whole piece.
Bodies: firm, but slightly softer than the head so the toy is nice to hold.
Arms and short legs: lightly, or not at all. A fully stuffed limb sticks straight out and looks wrong. Stuff the lower half so it has some weight, and leave the top few rounds empty so it hangs and bends.
Ears and flat tails: nothing. They are meant to fold.
Stop before the opening
Leave the last two or three rounds unstuffed while you close the piece, then push a final small piece in through the shrinking gap just before the last decrease. Trying to close a completely full piece pushes fibrefill out through the stitches and stretches the final rounds.
If it still looks lumpy
Roll the finished piece firmly between both palms for a few seconds. This redistributes the fibrefill and settles it against the inside of the fabric. It fixes a surprising number of pieces that seemed beyond saving.
For anything a small child will handle, use a stuffing labelled washable and hypoallergenic, and embroider the eyes rather than using safety eyes — no fixing is reliable enough for a toy that will be chewed.