I'd been looking at getting a small parts washer but when offered a small caravan sink and constantly tripping over an old resin barrel my mind had a lightbulb moment
If I added some pipework, a small washing machine pump and made a frame to hold it in......ta daa !
I get this......




I'm using a biodegradeable degreaser at the moment, I'm not sure on how the seals on the washing machine pump will stand up to Gyser or something similar, but I might risk it at a later date.