Can weapon/armor augmentations stack with themselves?

[drack]

Can weapon/armor augmentations stack with themselves?

For instance multiple wand chambers, crests, keels, or riding straps.

Wand chaimber: wand can be inserted and used as if held when weapon is held.
crest: it's a mark, same cost to make that mark a holy symbol only that's called "sanctified", no real benefit from stacking
keel: +2 swim, adds weight
riding straps: simple +1 bonus to ride checks.

These are examples since that tends to make communication easier.

So for example could a sword or bow have two wand chambers, an armor three riding straps, ect.
My gut says no, but wanna make sure since I saw it on someone's sheet.

[Biffoniacus_Furiou]

No, but there are a few exceptions. A double weapon should be able to have two wand chambers, since every other upgrade applied to it (masterwork, magic, etc.) has to be purchased twice. An Elvencraft (RotW) Longbow can be used as a longbow and as a quarterstaff, you need to get masterwork three times, so it should be able to have three wand chambers.

Multiple unnamed bonuses from the same source don't stack, and multiple named bonuses of the same name don't stack, so multiple instances of an item that grants a bonus would have no benefit.

[drack]

K, that's what I thought. Thanks for clarifying. =)