Artificer / Weird Science Question

[Vakil Smallen]

On the srd page for the Artificer class, there is a line that says

"Spell statistics (casting times, etc.) remain unchanged, although no components are required and the artificer is considered the “caster” for the purposes of CL." CL here presumably means caster level.

So, artificers are allowed to create tech that can effectively imitate any spell, arcane or divine, up to 4th level. My question is, at what Artificer class level do they get access to each level of spell? Can they attain any spell? I'm interpreting caster level to imply duration, DC, damage dice, etc., but does it also imply access to spell level? Can a 1st level artificer create a lightning bolt gun?

[Saethori]

This sounds like it is a question involving third-party content. Flagged to be moved to the appropriate forum.

[dragonhunterq]

Flagged to move to 3rd party.

Link to assist

Weird Science lets you know you can only use spells up to 4th level and if you check the class table where it lists weird science inventions by level you can see you will need to be 5th level before you can access 3rd level spells.