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Blade design

No.894807 ViewReplyReportDelete
I'm looking for info on blade design. Specifically, is there any math, or generally accepted knowledge out there on the best ratio of length to width for a general use knife blade?

"hey anon, what the hell are you on about?"
Lets say I'm grinding a knife blade out of an old file. I am limited to the width of the file "blank" for lack of tools, and I'm pretty much left with the variables of "point" and "length", right? If I want this to be a useful utility knife, how do I decide on the best length?

How much straight, flat belly between the sweep up to the point and the hilt is TOO much?

I understand that every knife is a tool for a purpose and the purpose should dictate the design, I'm just looking to learn something new, if you all have any thoughts on the matter.
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Saving all muh money

No.883622 ViewReplyLast 50ReportDelete
I plan on living inside a truck like this for about 6 months or longer, the goal is to save money so that i can buy a house cash.

The plan is to make a single small bed on the back of this truck as well as seal tight with silicon and spread anti-pest chemical underneath the truck and something that doesn't harm me inside as well as air monitor on the inside to make sure i'm getting the oxygen needed by keeping both front windows nearly open as well as the side windows on the back.

Shower solution: GYM
Laundry: Laundry mat
Food budget $5 a day max
Internet: mobile phone.

Parking solution would be at near-by hotels, club houses, foreclosed houses, for sale houses, church, malls, near-by stores, public parks, as well as state parks, public parking places, back of walmarts, and stores, as well as movie theaters and a few other places the goal is to map my entire county and never sleep on the same spot during the same week and make it random so that i dont raise any alarms.

Does anyone here have ever had any experience living on their trucks?
any tips you would like to share?

NO shills allowed!!!
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No.894282 ViewReplyReportDelete
What's your favorite unconventional tool?

Either the ones with one specific job, the ones you found in some weird corner of the internet, the ones that have only been around for the past 20 years or so, or the ones where you're like "how did people even get by without it?"
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No.894908 ViewReplyReportDelete
I don't know much about circuitry and I'm looking to replace some ICs/op amps in a 1979 reel to reel. I've posted about this before but I'm still confused about it.

So here is the layout of what is called the analog torque board. IC 29 is labeled as "7402" in the schematic. The IC that is actually in the reel to reel is labeled "sn7402N". If I want to replace that IC, do I need to find the exact same one, or do I just need one with 7402 in the name?

Another example is one in the schematic that is labeled "081". If the one that is actually there says "TL081CP", would I be able to replace that one with a "TL081GP"?

The reel to reel is pretty old and many of the parts are obsolete, so finding the exact part is pretty difficult. Is it unnecessary to be that exact about it?

peyote?? real recipe? I found this but idk

No.894794 ViewReplyReportDelete

Homebrewen

No.866518 ViewReplyLast 50ReportDelete
I've prepared a batch of mead must sometime around July 10th.
The airlock has not moved since weeks but I still see tiny bubbles coming up everywhere in the must.
It looks opalescent with a little greyish-white yeast foam on its surface.
Is such a long fermentation time normal or did I fuck something up?

pic unrelated
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