I Have used Barge since junior high school ( know known as middle school )I never had any problems with it here is a link to bottle and brush I use also mix thinner in the bottloe
http://www.silineandjohnson.com/Dispensers/dispensers.html
PS they also have different sice brushes to use in the bottle
Here is a link for bones i use for boning I use one of these bones every day making my holsters these come very smooth and no smell
http://www.basketsofjoy.com/bone-awl.aspx