Saw dust is causing problems for people, plus there’s a bug bringing out coal fluid as a solid. To overcome the hurdles, we can use Stackers. This idea is somewhat similar to Mincraft’s filtering system using hoppers, for those familiar with it.
The stacker is an object that forces its inputs to come out as whole items. The copper stacker can accept 5 item types. Due to the need for a full unit to clear the stacker, we use it as a filter.
The idea is to load the stacker with 4 items you don’t really care about and 1 you do – placing in an amount that will never result in an even unit being removed.
In the case of planks and sawdust, sticks and sawdust, and coke dust and the coal fluid bug, this works perfectly as all inputs come in unitary increments. Any partial unit at all will permanently act as a block.
While this will only work with robo-arms – stackers won’t feed to conveyors – it can be achieved with very small amounts of steel and doesn’t require waiting until Aluminum to automate stick production – discarding automation altogether for coke pieces/dust.
Because it is a very slow process, you may want to consider outputting a machine to a conveyor junction and extracting a particularly fast input (like planks or sticks) from 2 stackers instead of 1.