You can mix a variety of pigments into epoxy without issue. But you have to be careful of the amount added and the carrier the pigment is dispersed in. It's recommended to not exceed 3% of the total resin weight. I have used UTC's, powdered earth pigments, Transtint dyes and specific colorants for epoxy.
No problems.
Steve the Aluminite dye is used for casting and stabilizing. It takes such a small amount to. I have had no troubles so far.
There you go, I must have gone over some magic number to have issues!
Looking at the checks in your stave they don't seen to run off the edge of the stave so they shouldn't be a problem, only a cosmetic situation. Fill them with super glue and continue on. Reduce the stave to floor tiller stage then do your heat corrections first before adding the super glue.I don't think trying to make all the heat corrections and recurving at one time is a good idea. I would first get the stave as straight as you want it then add the recurves so they line up with the bow. Also, it's obvious that the stave is seasoned but is it dry enough to build a bow. I know Australia is in a drought but depending on where in Oz you are it may not be bow building dry. What is the R/H there?
Pat
That check I went through was what looked the deepest/worst and I only took half a dozen rings off, so I should be good to get below it. I did think about leaving the worst in, but they'd be full of dirt and gunk, so I don't know how well the CA would hold up. It had been down so long the sapwood and bark had completely rotted off. RH? Dunno, but it won't be high - the osage has been stored inside in relatively stable temps/RH for a few years now.
That was the plan with steaming, get it straight first then worry about putting in some bend at the tips. So far it looks like I'll be bending in different places to straighten and recurve the tips so hopefully not re-heating the same area!
On the other staves, seeing the deep checks in the end of the stave and the discoloration I'm wondering just how sound they are. It may not be an issue in Oz but here in the US, especially in the Eastern half any wood that has been on the ground that long would, IMO be worthless as a viable bow wood.
I don't know how close you are to the fires and I hope you are not close and are safe, fire killed/hardened wood could be an option for viable bow wood if you have access to it.
Those staves have been down for a matter of a week or two as I drove past them every day on my way to work, the mid-trunk cut I made is sound so I suspect I just need to lop a bit off the original cut and seal well.
As for fires, we're within site (maybe 15km/10 miles?) of the fire front. We had a months worth of rain last week so they've been knocked on the head for the moment but we still have 6 weeks of possible 40C/100F plus days so it will be going until the depths of winter. As for standing timber, I'm aware of only one species that is truly viable locally and it grows in the wetter gullies so may have escaped. Plus, some bloke going around knocking over trees in a national park will no doubt be frowned upon
I do have my eye open for any that end up coming down though.....