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I was going to suggest peer pressure, because it thought it would make it look cool?  But yeah, the resistors might do it too 

Now I feel like a ciggy. This TL072 is a bad influence 😤

Thanks for the advice. I finally worked out the issue. I bloody used 10k resistors instead of 100k for R5 and R9! Swapped them out and it now works perfectly with no smoke

Excuse me, but why 10k resistors to the ground before the output make your op-amp smoke? It doesn't seem to me something so bad, or I wrong?

I have no idea! But I don't question it. All I know is it works now ¯\_(ツ)_/¯

Thanks for the advice. I finally worked out the issue. I bloody used 10k resistors instead of 100k for R5 and R9! Swapped them out and it now works perfectly with no smoke

Hi I'm wondering if anyone can help me figure out what is wrong here. I recently built a dual buffer using the Klon buffer schematic. I used the TL072 to build 2x buffers in 1. When I connect the power (DC 9V) it starts to smoke. I'm pretty sure it's coming from the op amp but not certain. This happened the first time when the board was in the enclosure so I thought maybe something was touching the enclosure that shouldn't have been and causing a short. But I tried it on a second build without placing it in an enclosure and the same thing happened. I have attached my schematic. If anyone could spot any mistakes that would be appreciated. Otherwise I must have a short on the board somewhere that I haven't been able to spot.

Thanks

Just wanted to share my latest build called the 'Filth Dispenser.' Based on the Earthquaker Devices Dirt Transmitter. Really happy with how it turned out. Love the bias control which gives it a gated fuzz type sound when adjusted. Designed the PCB in Fusion360 from Storyboardist's schem located here: https://www.madbeanpedals.com/forum/index.php?topic=28042.0

UV printing by Dazatronyx here in Melbourne, Australia.

Always room for improvement with spacing out my components on my PCB but overall I love how it turned out. Sounds great too!

Video:
https://youtube.com/shorts/OPWvpXnl8EQ?feature=share

Thanks for the compliments! It is an etch I made using the dry film method. I am pretty efficient with it now but there has been a lot of trial and error. Here is a pick of the PCB.

Here is a shot of the guts

Made myself a Zvex Box of Rock from the Madbean Krankosaurus project file. I designed the graphic on the enclosure and called it a 'Rockmelon.' Had it UV printed by fellow pedal builder in Melbourne. I'm quite new to this and I'm very happy with the way it turned out.