I'm looking to replace something my dad has for Christmas. He already has an internal unit in his workshop that removes the sawdust from his equipment and the air in general. It is hooked up to a piped system leading outside his workshop (in great shape). The problem is outside. The piping (12 inch flexible metal piping) which leads to a 50 gallon drum is leaking leaving sawdust all over the yard (his invention - lol). Does anyone know of a collection system? He prefers to recycle as he frequently uses pressure treated wood (which has arsenic in it and can be dangerous for plants / animals). Does anyone know where I can buy a system or have plans for a replacement? Please email me at email@example.com.