How do I summon blocks like as a weapon or attack then dissapear?.

I've been playing other games on roblox some of them are really good they might be Key-pressdown's and I wanted to do a tool attack so when you click with the tool it would summon a edited block then dissapear

function onClicked(mouse)
local part = Instance.new('Part', game.Workspace)
-- Edit the properties of the part here
end

function onEquipped(mouse)
mouse.Button1Down:connect:(function() onClicked(mouse) end)
end

script.Parent.Equipped:connect(onEquipped)

This is for a Tool. Put this in a script, and put the script inside the Tool. If you want it in HopperBin form, just change 'OnEquipped' to 'Selected'. Hope this helps.