The mason on my Des Moines crew said my mortar joints looked sloppy, so I switched from a slicker to a jointer mid-wall | Bricklayers - Opinions Matter
The mason on my Des Moines crew said my mortar joints looked sloppy, so I switched from a slicker to a jointer mid-wall
Half the guys I know say a slicker gets it done faster and the finish does not matter, but the other half swear a jointer is the only way to get a consistent joint, so which one are you running and why?
That "smears mud around" thing is real, I've seen it happen when the mud is too wet. What worked for me was letting the mud set up a bit longer before tooling, then hitting it with a jointer while it's still firm but not wet. @theabarnes is right that a slicker can push mud into the joint instead of cutting it clean, but if you keep the slicker damp and use light passes it does fine in a pinch. Your mileage may vary depending on your mix though.