Forum rules
The DIY forum is for personal projects (things that are not for sale, not in production), info sharing, peer to peer assistance. No backdoor spamming (DIY posts that are actually advertisements for your business). No clones of in-production pedals. If you have concerns or questions, feel free to PM admin. Thanks so much!
The holy grail is a digital pedal. Generally speaking, those aren't the best for modding.
I don't have ANY knowledge of reverbs, so I'm honestly not sure what a dwell control does. I can't answer that. But, for the reverb only output, it may be possible to find where the clean signal and reverb signal come together, and rout an output directly from the reverb section. That could require breaking the clean signal connection or buffering from the reverb signal.
Dwell is the same thing as feedback. It's not possible to adjust that parameter on the Holy Grail. It is possible, however, to get a wet only signal. You turn the mix all the way up!
I love the smell of solder in the morning.
Successful dealings with: blooghost, starcastic, bronzetalon, theavondon, absent, jero, sevenSHARPnine, magiclawnchair, oldangelmidnight, and others that I can't remember lol