The first of Ted Hansen’s articles (Home Shop Machinist 31.5 – Sept 2012) showed a very nice cap to keep swarf out of the compound’s leadscrew: neatly shaped brass shimstock, held in place with a pair of screws tapped into the compound base.
Being a big fan of adhesives and low-effort solutions, I applied stainless steel tape:
Perhaps a 3D printed button might be nicer…
The Smell of Molten Projects in the Morning 