When I place sandstone in the chisel no options are given.

Ever find a fix? Came here because of this exact issue...

I don't know if you're using a modpack, but if you are, and it has KubeJS, then you can add tags for sandstone, and a few other blocks!

The tags themselves were found by @NecoAngelus in this thread: https://github.com/Chisel-Team/Chisel/issues/900

If you do have a modpack with KubeJS, and you open the folder the modpack is in, go to the "kubejs" folder > server_scripts > script.js

Open the file in a text/code editor, and replace the existing "onEvent('item.tags'..." function with this:

onEvent('item.tags', event => {
	event.add("chisel:basalt", ["minecraft:basalt", "minecraft:polished_basalt"]);
	event.add("chisel:sandstone", ["minecraft:sandstone", "minecraft:chiseled_sandstone", "minecraft:cut_sandstone", "minecraft:smooth_sandstone"]);
	event.add("chisel:metals/aluminum", ["immersiveengineering:storage_aluminum"]);
	event.add("chisel:metals/bronze", ["thermal:bronze_block"]);
	event.add("chisel:emerald", ["minecraft:emerald_block"]);
	event.add("chisel:redstone", ["minecraft:redstone_block"]);
})

Save, and once you play, sandstone and the other blocks here should be good to go!