src/main/resources/assets/aether_legacy/models/item/aerogel.json

{
	"parent": "aether_legacy:block/aerogel",
	"display": {
		"thirdperson": {
			"rotation": [ 10, -45, 170 ],
			"translation": [ 0, 1.5, -2.75 ],
			"scale": [ 0.375, 0.375, 0.375 ]
		}
	}
}