This is the first machine I really have used q-tips on. Other machines I just used tooth brushes, cloths, paper towels and the like.
In addition to the q-tips I used denatured alcohol to clean it. That stuff works pretty good. Drys fast and doesn't leave much residue or stains behind.
Of course it's not for little kids to use as they'd get stoned pretty quick on the vapors.
I got the 500 to sew so I checked with my LSMG and he said ............. yes I have the parts for it, I'll call you back Monday, too busy today. I figure I'll have it all cleaned and ready to finish up when he calls. Once back together I'll put it in a cabinet ( I have four sitting with no machines) and we'll use it. I've got all the cams it needs and about 80% of the attachments too. Of course the 401A and 4622 can share some of the feet and attachments with it so we're good to go here.
Joe