Thank you so much for the input. As usual one question answered brings on a dozen or so new ones.
I've spoken shortly with this customer on the phone and have not met face to face as of yet. I'm trying to work that out hopefully some time next week.
First of all I obviously have to find out if this organic solvent allergy is just a suspicion of the customer or has been confirmed by her doctor or some other independent source. DW hit on a good point on the evaporation of the solvents I'm just not sure if there would be any residue that does not evaporate so that has to be answered before I would even consider taking on the job. If the allergies are as severe as she makes it sounds I'm sure she's under the treatment of an allergist who may be able to help out.
I'm just realizing that I have to check into cross-contamination just as a food facility that handles nuts needs to list that on the labels of food they produce even if the food has no nuts in it.
Do you know where to source the latex glue? I would be surprised if my regular finding place would have it. Any chance you know the brand or could put me in touch with your contact in NY? I have been thinking about having to stitch it. I may inseam but an other option is a McKay type stitch. I would do it by hand and lay the stitch in a groove on the outsole. That reminds me I have a picture to post and would like to know what that type of awl is called and if it's available in the US. I'll do that over the weekend.
I forgot all about Hirsch Kleber. I have worked with that and it's much nicer to work with than press cement. I don't really have any experience with pegging. Do you do this on the heavier shoes like men's work boots or on most - all shoes? My grandfather had a manual peg machine in his shop. I believe my Uncle has it. I remember as a kid barely able to reach the paddle making pegs. Even than it didn't take much to make me happy.
I don't quite understand what you mean by
This is more symbolic if you look at the distance between the pegs
What is the average distance between you pegs?
The water based all purpose, the one I have in the shop is DAP from the regular hardware store, do you have experience that the Upaco is better? When sewing through the all purpose does it gum up like regular all purpose does? I could just not fold any of my edges, that would cut down on a lot of glue work.
I'm certainly aware that allergies to the chrome salts in leather are well known. That's why I would gather all my materials, take a sample to give to the customer (I have even heard of allergists gluing the samples to a customers back) and put the materials aside so once it checks out the same skin is used as was tested. A different skin that seems to come from the same batch may have been treaded slightly different so one has to be very careful about that. You mention the burn test, in your experience does it always detect any chrome salts or do you think there is a (small) threshold that needs to be met before it shows.
Good tip on the adhesive company, please let me know how that works out for you. In the sample kit for leather adhesives I don't see the latex listed. Is it included or is that a separate sample?
What are the advantages or downsides to using latex cement v/s rubber cement? I have not used latex so I'm curious if it's something I should try regardless of this project. Any thought are appreciated.