SKYRIM Getting multiple Enchanting/Disenchanting weapons?

You can put up to two enchantment on an item, but only when you have the top level Enchanting perk that requires 100 Enchanting skill (and a chain of the previous perks to reach the top one). Without that perk, you can only place one enchantment on one of your personally enchanted items. Items like the mace you mention don't fall under the limit since it is a special item built by the developers into the game.

You might be able to use mods or console commands on the PC version to work around that limit, but the console versions of the game doesn't have console commands and the mods are much more limited (you didn't say which version you had, so I thought it best to say for both).

You can indeed put two enchantments on a single weapon, but this requires you to mod your game save.

This is done by extracting the .dat file from your game save, loading it onto a pc version of Skyrim and modding accordingly. The placing the .dat file back into the game save and continue playing.

Now chance are you don't know how to do this so my advice is head over to a website called Se7ensins (it's a modding site for gamers, as well as a few other things.) Last time I checked someone was doing this for people for free.

Sorry to burst your bubble but you can only put 1 enchantment on a weapon. Then its stuck with that enchantment.