SilverDollarLeather

I am looking at tinkering with pyrograpgy to decorate/personalize some of my leather pieces. The issue is I mostly use crazy horse/apache pullup (chrome tanned) leather. I have been branding these items - always outside and wearing a 3m particle mask - but am thinking I should probably get something a little more heavy duty. Anyone have any knowledge/experience as to what type of mask would give the best protection (N95? P95? R95?) and/or suggestions on particular respirators/filters?

I recently purchased a side(15sqft) of black "oil skin" leather (according to my vendor foreign made - yeah I got it cheap - from in India I believe - pictured) Problem I'm having is I'm getting REALLY bad dye transfer. (Pictured below as drawn across a regular white sheet of paper - front and back) I talked to my vendor and he suggested resolene to coat it. I've searched the boards and seen multiple posts about how to finish/coat SELF DYED leather, but this is off the shelf and I didn't expect this much transfer. The brown oil skin I've been using is fine (as well as everything else I've bought from this vendor). I put a single coat of resolene (applied with a clean, old t-shirt) to it, but still am getting some dye transfer. Is this normal for black "oil skin"? Is there anything I can do to "seal this" so I don't get ant transfer? I prefer to work with "natural" (even if dyed) leathers that don't need to be sealed (it's kinda the look I'm going for and the resolene gives a "slick/shiney" finish). Any advice?

I'm new to the boards and fairly new to leatherworking. I'm currently fine tuning some pouch and bag designs for my new website/venture. Here's a work in progress (prototype 3 - going back to tighten up the stiches to a 1/4") : While waiting for UPS the other day, I decided to try my hand at a leather pickguard for my Fender Stratocaster. I wanted to keep it simple (and still trying to figure out where to mount the silver dollar conchos). I've already been heeding the wisdom on the boards and look forward to learning more from y'all.