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Phrontist
Determined



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Custom Cultivator Knife - Blade Concept
#26824061 - 07/14/20 09:50 PM (3 years, 6 months ago) |
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Been at the drawing board for a bit and I’m pretty happy with where the blade design is at. Nothing too insane, but I like the way it functions more than forager blades. So I figured I’d share it and hopefully get some feedback and ideas for improvement. If you have any, please share.

I’ll be putting my ideas for handle design into CAD next. I’m going to have a copper punch tool for agar built in. There will also be a tool for light cleaning, but I haven’t decided if I want to use a brush or not. The other option is to hide a custom bladder in the handle and put a pressurized air blower right inside the copper punch tool.
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Snaggletoots
One pump stumpy

Registered: 06/26/20
Posts: 123
Loc: A nut among washers
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Re: Custom Cultivator Knife - Blade Concept [Re: Phrontist]
#26824081 - 07/14/20 10:08 PM (3 years, 6 months ago) |
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Had you thought about a small ruler for measurements?
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Pastywhyte
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Registered: 09/15/12
Posts: 37,810
Loc: Canada
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Re: Custom Cultivator Knife - Blade Concept [Re: Snaggletoots] 1
#26824094 - 07/14/20 10:20 PM (3 years, 6 months ago) |
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A thin handle and small blade is better for agar work. I see that as being potentially clumsy for agar work myself.
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jcm4620
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Re: Custom Cultivator Knife - Blade Concept [Re: Pastywhyte]
#26824147 - 07/14/20 11:21 PM (3 years, 6 months ago) |
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that looks like a great knife for gutting a mugger but as pasty said id rather use my scalpel. id imagine a pitri would look like applesauce by the time ur done using that thing on it lol. id get a good stainless steel scalpel and put the O.J simpson special in the car or somewhere else incase ya need it😃
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scarabaeus
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Re: Custom Cultivator Knife - Blade Concept [Re: jcm4620]
#26824164 - 07/14/20 11:42 PM (3 years, 6 months ago) |
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Did you just say O.J. Simpson Special? LMFAO! Everyone ^^^ makes to me. An old saying is 'the proof is in the pudding'; I would add that people who design things never find success in their first 'draft'. Make it, use it, improve it. But if you don't use it yourself, you don't know if it's any good.
That would be like me designing a bra for large-breasted women. Ah, nothing better on a chilly night... The women that is...
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jcm4620
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Re: Custom Cultivator Knife - Blade Concept [Re: scarabaeus] 1
#26824167 - 07/14/20 11:48 PM (3 years, 6 months ago) |
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lol ya but most large breasted women are just large women so be careful what u wish for lol
Edited by jcm4620 (07/14/20 11:49 PM)
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scarabaeus
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Re: Custom Cultivator Knife - Blade Concept [Re: jcm4620]
#26824174 - 07/14/20 11:53 PM (3 years, 6 months ago) |
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You make a very good point! I could tell you stories (some good, some wha?), but that is a topic for a different thread . I love this place -can't talk like this where I work.
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ManifoldPrime
Per Ardua Ad Astra



Registered: 03/16/17
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Re: Custom Cultivator Knife - Blade Concept [Re: scarabaeus] 1
#26824308 - 07/15/20 02:14 AM (3 years, 6 months ago) |
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That looks awkward and heavy. scalpels are long and thin for a reason. Imagine trying to write with a pencil shaped like that.
I think you just made a CS:GO knife
-------------------- My Magnum Opus:Thai Variety Comparison Please correct me if I say something wrong! | Current Trade Print Availability:Some PESA and RW available for South African posters. Snail Mail only. |
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Phrontist
Determined



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Re: Custom Cultivator Knife - Blade Concept [Re: ManifoldPrime]
#26824564 - 07/15/20 07:49 AM (3 years, 6 months ago) |
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Thanks for all the feedback, much appreciated.
Seems like the majority concern is that this will be unwieldy for agar. Y’all have picked up on the fact that I was primarily focused on harvesting during design, with lab work being a lower priority... perhaps too low.
Ideally my tool would be perfect for every task, but that’s never the case with a multi tool of any kind. There’s a push and pull to the design, with the goal being to find a sweet spot in the trade off ratios and make up for that in simplifying things into one tool (and maybe additional functionality).
Is a Swiss Army knife better than a screwdriver at driving screws? No, but it’s better than a screwdriver for a bunch of other things and it can drive screws. That said, I think there’s room to improve the lab role without sacrificing much (or maybe any) of the other roles.
Thanks again for looking and giving feedback. Outside eyes are invaluable. Version 2 coming soon.
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Phrontist
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Re: Custom Cultivator Knife - Blade Concept [Re: Snaggletoots] 1
#26824568 - 07/15/20 07:51 AM (3 years, 6 months ago) |
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Quote:
Snaggletoots said: Had you thought about a small ruler for measurements?
love the ruler idea and could etch one into either side of the tool (inches on one side, cm on the other). Would only be about 3” probably, but that’s not too bad.
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Snaggletoots
One pump stumpy

Registered: 06/26/20
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Re: Custom Cultivator Knife - Blade Concept [Re: Phrontist]
#26824807 - 07/15/20 09:56 AM (3 years, 6 months ago) |
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Rad, yeah thats what I'm always looking for when collecting. Cool
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ManifoldPrime
Per Ardua Ad Astra



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Re: Custom Cultivator Knife - Blade Concept [Re: Snaggletoots]
#26825040 - 07/15/20 11:57 AM (3 years, 6 months ago) |
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To me, a knife doesnt make sense for harvesting, as my personal preference is push-twist-twist-pull rather than cutting, and then cutting the coir thats stuck to the stem. But even if I was cutting when harvesting, I dont think I would use a knife over small kiddy scissors as it would have to be extremely sharp and the mushies themselves properl attached for the "sickle" style of cutting to work. If you have access to all the machinery to make a knife, why not make scissors with a "L" shaped pair of blades? so you can cut horizontally from above
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Roger Clemency
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Re: Custom Cultivator Knife - Blade Concept [Re: ManifoldPrime]
#26825061 - 07/15/20 12:08 PM (3 years, 6 months ago) |
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I had some 90* medical scissors that I used to harvest with. They were handy when I did tubs without liners. I still use scissors for 70% of my harvesting but sometimes if I have a large cluster I use the scalpel or knife underneath.
Lately I’ve been cutting right under the base of the stump so there’s no stump material left on the sub. The 2nd flush pins seem to like the nooks and crannies created.
This knife kinda looks like a karambit. Pretty cool look but would be a pita to sharpen.
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Phrontist
Determined



Registered: 07/17/13
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Re: Custom Cultivator Knife - Blade Concept [Re: Roger Clemency]
#26825464 - 07/15/20 03:14 PM (3 years, 6 months ago) |
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Quote:
ManifoldPrime said: If you have access to all the machinery to make a knife, why not make scissors with a "L" shaped pair of blades? so you can cut horizontally from above 
Because I don’t cut from above. Got a new monotub setup I’ve been tweaking and will post about it soon. 
Quote:
Roger Clemency said: This knife kinda looks like a karambit. Pretty cool look but would be a pita to sharpen.
Yep, it’s a modified karambit design. Sharpening isn’t the easiest, but the steel I’ll be using holds its edge through a ton of use. Since there’s really minimal wear in this work (shrooms and agar have very low resistance, plastic bags pretty low too) I don’t need to worry about durability and can really go all in on edge retention.
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