Any old shop compressor can work. Do either of you own a tap and die set? Most have a 1/8 metric tap and die in them. If not they are not too expensive at Sears.
If you have a compressor, with a hose, get a reg/trap at Lowes or Home Depot. Then get an adapter from 1/4" standard to 1/8 BSP , the usual airbrush reducer, can be found on line cheap. Now if you are like me, cheap and handy, you can make due with the metric taps and dies and alter a standard 1/8" brass fitting.
An 1/8 nipple can be chased with a 1/8" BSP die in the normal direction, back it all the way off, flip it over and run it down again. I have done this several times. AB hoses are a straight cut thread, hence why you flip the die over, it cuts it both ways , creating a straight cut thread.
Now if you need to make a bushing, its a bit trickier, you have to start with a plug, preferably with a standard hex head, and solid. Drill an appropriate hole and tap to 1/8BSP, easier said than done, keeping it straight can be fun , this will not give a straight thread but if cut a bit too deep it will work with sealant.
I always try to get hoses with a 1/4 " female on one end and a 1/8" male on the other. This way i can use a 1/4" standard disconnect set at my regulator, to make hose removal easy. And i have 1/8" disconnects on all my AB hoses and brushes, plug and play .
I will try and add pics later at home . I have a good one saved . I just deleted it off my phone the other day.
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