Oil doesn't, water will on occassion, as water is much smaller on a molecular scale than oil and can seep into the structure of the delrin. I've actually oiled the worrblade bolt since day one (the o-rings, but when you slide it, it spread to most of the bolt anyway) and it never even tightens in the chamber, no visible expansion of the Delrin material.TheAngryGumba11 said:I heard Oil expands delrin slightly. But I'd Oil the Orings Myself.
No, thats only if you drop a whole bottle of oil on at a time or soak it in oil for a couple of days. Besides, even if it does swell a little, it will help reduce blowback.TheAngryGumba11 said:I heard Oil expands delrin slightly. But I'd Oil the Orings Myself.