Upgrading Magical Weapons & Armor Question

[JiggleFloyd]

Hello,

I have looked all over for this question and just can't seem to find the answer. This thread https://paizo.com/threads/rzs2p4s8?How-to-Upgrade-Your-Gear-in-PFS came close, but it did not answer my specific question.

Say I start with a masterwork longsword.

First Question:
Can I slowly, over the course of the campaign, upgrade this with an enhancement bonus of +1, then later replace that with a +2, then a +3, +4, and finally a +5 weapon? My understanding is that I can do this and that I pay the difference between the enhancement I want and the enhancement I currently have. So far so good I think but let me know if that's not correct.

Second Question:
Can I also add, over the course of the campaign, other magical properties to my weapon, until the maximum +10 is fulfilled? For example, can I add the keen property (+1 equivalent bonus) then later the flaming property (+1 equivalent bonus), and then later add the haste property (+3 equivalent) bonus?

At the end I have a +5 Keen Flaming Haste Longsword.

Final Question:
Not that I plan to do this but can I replace special abilities once they're on there? If I want to replace my flaming property with the frost property, is that against the rules? What about a flaming with a flaming burst?

[JiggleFloyd]

OK, I finally found a page that answers these questions pretty well:

https://www.d20pfsrd.com/magic-items/magic-item-creation/

So this can be closed, thanks.

[MrCharisma]

First question: Yup, correct. You nailed it.

Second Question: Yes it's possible to have a +10 equivalent weapon. I'm assuming that by "Hasted" you meant the SPEED enchantment. There are 2 things to note here:
1. The weapon enchantments (speed/flaming/etc) cost the same as their +x equivalents, so a +2 Speed Longsword costs the same as a +5 Longsword. This means a +10 Equivalent weapon would be 200,000gp worth of magic enhancements.
2. While you can't have more than +5 on the enhancement side, there's no restriction on the weappn qualities side. So you could have a +1 Flaming Frost Shocking Corrosive Keen Speed weapon (assuming I didn't mess up my maths therr). You do need at least a +1 enhancement before adding qualities, but that's all.

Third question: I don't think there are rules for that, so no. But talk to your GM. It'd probably cost you some money but I'd allow it.

[JiggleFloyd]

sweet, thanks for the clarifications