Update: I have some concerns I want to discuss.
1.)
@gunmetalshark told me that it took some time until the bowl did fit his sh. So my concern is are the showerheads all the same diameter (how is the allowance). Will a glass bowl which fits my showerhead also will fit on your sh. are there tolerances between showerheads and could this be a problem?
2.) ehle is not near to me, so I am planning to ask also a glass blower near to me. So I would be able to go to the shop with my showerhead and test all the bowls if they fit. If we would choose to order from my local glass blower, I will have to dispatch all glassbowls by myself I think.
3.) I want to make clear that I am doing it for the fc community I will not earn anything so I also do not want and can not take any responsibilities (e.g. bowl is not fitting my showerhead and so on) therefore maybe ehle would be better, because my plan as told before is to send them the e-mails of the interessted fc members and quantity and they should send you a invoice, receive the payment, dispatch the bowls and be responsible. So to say if you will/should have problems with the bowl you will have to contact and deal with ehle not me!
Also how long should we wait so that members who are interssted have the chance to take part in this order. My plan is to wait one week so everybody who is interesssted has the chance to write in this thread.
feel free to discuss...