Wood Putty?

[suds]

I’ve got a split in my cedar handrail and since snow will accumulate on it I’m wondering what to fill it with and be stainable?  [attachimg=1]

 

[tjbnwi]

I'd epoxy it. Mix some color in the epoxy.

Tom

 

[Naildrivingman]

If you can, try GENTLY inserting a shim or two to spread the crack enough to surgically insert some ext glue, remove shim, then clamp.  If not, epoxy is about the only option I can think of.

 

[sancho57]

Im with Thom and ndm, Id use a epoxy stick to match the color
https://woodrepairproducts.com/?s=epoxy+stick&post_type=product

 

[Pnw painter]

I'd recommend System Three Scuptwood Paste. If you end up using it, don't overfill the crack because it's not the easiest to sand.

Sent from my iPhone using Tapatalk

 

[tiralie]

Since this is your railing, you probably have time to dutchman a piece in and then you can re-stain/finish. Epoxy works, and can be aesthetically pleasing and is quick, but to me it always looks patched.
Tim