Are you trying to reclaim your oil rigs or your glass flower pipes? One thing i found that helped do the trick was to get my 99% isopropyl hot before using it and then once it was hot and inside the rig, I would cap it off with rig nipples and shake it a bit, but the heat does all the hard work...
If you smoke dabs at all, then def suggest you grab a zip lock baggie and break down your grinder putting all the parts inside the bag, then fill it with isopropyl 99% and wiggle it around for a minute, then taking a brown coffee filter strain the iso into your glass dish, from there evaporate...
Too easy boss! You are looking for that reclaim game to start taking shape, here is all you gotta do, get a bottle of 99% isopropyl and some rig nipples, google it, heat your isopropyl with a cup of hot water and boom, that is like magic, dissolves every bit of oil build up, talking oil...