When having the same block in the chisel, have the ability to copy what you're looking at into the chisel rather than having to navigate into the GUI to select the same variant.

For example, say I had a chisel with cobblestone currently set to Dent. Looking at a Panel-cobblestone already placed, have some modified click be able to set the cobblestone in the chisel to the Panel variant.

This would let users smoothly switch between variants already placed without having to navigate the GUI every time, which I feel can be tedious in complex rooms when the user is still designing or experimenting. (I admit this tedium can also be alleviated by my simply being more organized in building.)

I'm not sure what modifier might be advisable or lack conflicts. Sneak-left click?

does shift+Rightclick have a function allready? you could use that I think.

Sneak left click is already reserved for cycling backwards. I don't mind the idea but I think the main issue is figuring out a good interaction flow.

Since chisels are quite bad breaking blocks, left click would work.

@QUEWEX I don't think the pick block control is hookable. Chisel can query the keybinding and could register an overlapping control for it, but it would be a different action because AFAIK pick block does not have callback. It just copies the block into the player's active hotbar slot.

@QUEWEX I use pick block all the time in survival, it's certainly not a creative-only thing.

It's useful when building with a variety of blocks, saves you sometimes having to open your inventory; hover over the block you want and press 1-9 to move it to the hotbar (and that's the "quick" way, even... not to mention the longer one).

You just look at the block you want and press pick block instead.

I'd personally be annoyed if my pick block was overridden. 😛

Hello again. I am not sure if this suggestion has long since been discarded despite being open, but I had a thought about the control issue.

By default, minecraft has a "pick block" control option. I am not entirely certain what it is used for (perhaps creative?), as I have never seen a mod make use of this control for any control schemes. This is usually bound to mouse3/middle mouse. Would it be possible to, while a chisel is held, override the default Pick Block behavior and make use of it for this interaction? Or, a modified Pick Block control (e.g. shift-mouse3)?