Jan / Feb 2014 update:
current prep time for new orders if you happen to order when stocks are low is approximately 4-8 days.
I try to keep stock of all units at all times, however there is a physical limit to the number of units I can prepare at a time and the processes involved take several days for each unit. JrF units are in high demand and its now a quite regular situation that stock is already sold before it is ready. Therefore, whilst I always process orders as quickly as possible it would be worthwhile remembering that JrF offers hand made units and there could indeed be a slight wait for your order. Over the last 12 months order processing time (not including times when i've been away on field trips etc) has ranged from 1 day to 14 days.
during 2014 I will be away on field trips and preparing installations etc during the following months - this will impact on delivery times:
late april / early may
early / mid june
late august / early september