Author Topic: Lotus Fuzz (Stomptown Harmonic Fuzz)  (Read 354 times)

Leevibe

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Lotus Fuzz (Stomptown Harmonic Fuzz)
« on: April 15, 2018, 08:19:20 PM »
I've been working for about a year now on a really challenging build for a friend of a friend. the pedal is coming along but I'm waiting on some machining work that's taking longer than expected and I hated keeping this very patient guy waiting so I offered to build him something cool on my dime.

This is Stomptown's layout of the Harmonic Percolator. I've had the circuit built but not boxed for a very long time. I thought it would make a cool circuit for the purpose. It's such a fantastic sounding fuzz.












I've really gotten into 3D printing and I have a whole internal structure modeled and printed for the fancy pedal I'm working on. I realized that this pedal would benefit from the same type of thing on a smaller scale. I was able to create a 3D printed mounting piece to allow me to top mount signal and power jacks on a 1590B. It works great and it spaces the Lumberg jacks into the enclosure so they're not so sticky-outy. It's bugged me that I couldn't find any star washers to fit these jacks. This holds them in place and gives them the perfect inset. The power jack mounts directly to the printed part and just protrudes through a hole in the enclosure. No need to mount it to the case. I also created a bracket to mount the PCB to that's held in place by the stomp switch. Of course I also 3D printed drilling templates to make sure everything lines up precisely. This is such a fun way to work!

If anyone has a 3D printer and wants to try out the top mount setup just PM me and I'll send you STLs of the bracket and drilling template. If you want to design your own, Hammond and Lumberg offer STEP files of their jacks and enclosures. I was able to drop them right into Fusion 360 and model around them.









storyboardist

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #1 on: April 15, 2018, 09:08:54 PM »
Dude that's awesome! Great looking build. PM incoming :D

Stomptown

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #2 on: April 15, 2018, 09:58:06 PM »
Looks great Lee!  I really did the control layout,  graphics and knob choice on this one.  And the 3D printing is just awesome.

diablochris6

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #3 on: April 15, 2018, 10:24:01 PM »
I dig the subtle graphic on this, and the 3D printing is ingenious. Great job.
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alanp

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #4 on: April 15, 2018, 11:02:54 PM »
I can not be the only one who saw that jig and thought, is that homemade fibreglass molding?!?!

Damn nice pedal there :)
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Aleph Null

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #5 on: April 16, 2018, 11:37:11 AM »
Wow.  :o Graphic looks great. The 3D printed jig/template is some next level stuff.

mjg

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #6 on: April 16, 2018, 04:20:14 PM »
The graphics look great - how did you get it looking so nice and shiny?  Is it envirotex finish?

Leevibe

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #7 on: April 16, 2018, 06:40:22 PM »
Thanks friends!

I can not be the only one who saw that jig and thought, is that homemade fibreglass molding?!?!

I printed it in "natural" PETG plastic, which is clear. It looks white once a few crisscrossing layers build up. It's just the spool of filament that I have loaded on the printer at the time. I was using it on another project because I thought it would be stronger than black because sometimes the pigments can affect strength. It wouldn't have mattered in this application. Yeah, I see what you mean about it looking like fiberglass.


The graphics look great - how did you get it looking so nice and shiny?  Is it envirotex finish?

Yep. Good old envirotex. The graphic is on a kind of chrome sticky material that I printed on with laser toner. I now wish I had been more persistent and tried more print settings. I think I could have gotten a print without the streaks you can see in it.

287m

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #8 on: April 16, 2018, 07:17:15 PM »
bookmarked. I love your style, your way to do.
and triggered to buy caliper  ;)

Leevibe

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #9 on: April 16, 2018, 07:26:04 PM »
bookmarked. I love your style, your way to do.
and triggered to buy caliper  ;)

Thanks Febri. I really appreciate it.

DO get a digital caliper! I can recommend this one because it's the one I have experience with. It gets great reviews, it's very affordable, and I don't know how I ever got along without one.

juansolo

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #10 on: April 19, 2018, 10:06:56 AM »
Like that a lot!
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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #11 on: April 19, 2018, 10:36:53 AM »
bookmarked. I love your style, your way to do.
and triggered to buy caliper  ;)

Thanks Febri. I really appreciate it.

DO get a digital caliper! I can recommend this one because it's the one I have experience with. It gets great reviews, it's very affordable, and I don't know how I ever got along without one.
I have the same (almost) digital caliper.  Mine is the "absolute origin" version, which costs 50% more, but is probably not 50% better. It is absolutely one of the most useful tools I own.
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pickdropper

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #12 on: April 19, 2018, 01:37:36 PM »
This is fantastic.  I really dig it. 
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Leevibe

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #13 on: April 19, 2018, 06:14:03 PM »
Like that a lot!

That's good because it's got a trick or two lifted from your play book.   8)



I have the same (almost) digital caliper.  Mine is the "absolute origin" version, which costs 50% more, but is probably not 50% better. It is absolutely one of the most useful tools I own.

Yeah, that one looks pretty sweet too. I thought about it but went cheapie. I haven't been disappointed with it. I use it all the time.

junkemail86

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Re: Lotus Fuzz (Stomptown Harmonic Fuzz)
« Reply #14 on: April 19, 2018, 08:18:03 PM »
Great job!!