How to make Spider Silk Thread by Persona
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During the summer months, spider webs cover every corner, and every open space of my yard. These webs are humongous, the largest ones being about 5 feet wide. The webs I encounter in my garden are webs are from several kinds of Orb spiders. None of the spiders that build the giant webs in my garden are poisonous. This is lucky for me, because I have walked into countless numbers of webs.

I have also encountered many abandoned webs, which gave me the idea of harvesting these out-of-use webs for their silk. Having walked into so many webs, I know how unbelievably strong and stretchy their threads are. Spider silk, in fact, is the strongest fiber ever discovered. Spider silk is stronger than steel, for its diameter; that is, a thread of steel would be weaker than a thread of spider silk of the same size.

Scientists have been working on how to entirely artificially duplicate spider silk in the lab for a while, but have not yet been able to make the silk entirely without spiders. I have included some websites of some recent research on the subject at the end of the instructable.

In this instructable, I will show I how I harvested abandoned webs and turned them into threads that I could use to sew.
 
 
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Step 1: Understand which species make the right webs

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Where I live, in southern North Carolina in the USA, there are about four types of spiders that make good webs for collecting:

1) golden orb spider,
2) black and yellow orb spider,
3) crab orb spider, 
4) orchard spider


All of these build large, regular orb shaped webs, with strong fibers. None of these spiders are dangerous, but I recommend avoiding their bites anyway, because it could be painful, and there may be those who are allergic to their bites. I have never heard of anyone being allergic to orb spiders, but it's not impossible. Also, if you got close enough to one of these spiders to actually get bit by it, you were probably seriously annoying it (I have actually poked a giant golden orb spider once to show my uncle that it was harmless).

Before collecting webs from any spider, please make sure you know what kind of spider it is. There are poisonous spiders in the USA. Outside the USA, I cannot speak with authority about the kinds of spiders, so you should do you own research about spiders before collecting their webs. Especially in Australia (home of the most poisonous spider in the world)! In the USA there are two web building spiders that have a deadly venom, and should be avoided at all costs:

1) The black widow (and brown widow) spider
2)The brown recluse


I have not seen these in my yard, but I have avoided their habitats on purpose. The picture I have of them are not mine, because I did not want to stick my face in them to take their pictures. Luckily, these spider's webs look completely different than the four spiders I mentioned earlier. While the four spiders I mentioned all build webs in the open, above ground, and in regular orb shapes, the poisonous spiders build irregular webs in piles of wood, rocks, bricks, and other things. These spiders are often found in garages, for instance, or firewood piles. I will say it again that these spiders are very dangerous! If you are bit by one ever, go to the emergency room!

I have included pictures of the spiders I mentioned, and their webs.
 
Master97865 says: Oct 19, 2012. 9:13 AM
Wow. This is gorgeous! I never knew that you could make thread from spider webs! Too bad I don't live anywhere near a place where the spiders you listed live.
emmieberry says: Dec 4, 2011. 12:26 PM
This is hands down the most interesting instructable I have ever seen, It's well done and I learned a lot from it! : D
tinker234 says: Jun 3, 2011. 7:38 AM
hey wow could you go and cath spiders and begin a spider web farm
gthomas14 says: Oct 6, 2011. 6:35 AM
YEAH THATD BE AWESOME!!
tinker234 says: Oct 7, 2011. 3:44 PM
yeah it would be fun
yoshi1 says: Feb 26, 2011. 4:11 PM
I think ticks should be added to the arachnid list because they have 8 legs too.
zzoe says: Mar 27, 2011. 2:29 PM
No need to add them, they're already there. Ticks, and all other mites are arachnids. You had the right idea.
-Z.
yoshi1 says: Jan 22, 2011. 12:00 AM
You should see the size of a camel spider they are massive! I'm not sure if they make webs though?
Toxonic0 says: Jan 25, 2011. 9:32 PM
No they don't, they're not actually spiders. They're more closely related to scorpions. No web at all.
raja681 says: Feb 28, 2011. 9:23 PM
srry said spider meant arachnid not spider srry they are in the same order as the spider and the scorpion which makes it no more closely related to either
XaviaPhoenix says: Feb 17, 2011. 7:47 PM
I bet that if you were to weave a friendship bracelet out of spider's silk, it would last for YEEEEEEARS. Some of the strongest stuff is said to be 10 times the strength of Kevlar. That's awesome.
nutsandbolts_64 says: Jul 19, 2010. 4:57 AM
Would daddy long-leg spider webs work?
Persona (author) says: Jul 19, 2010. 11:18 AM
I think it would, especially if this sentence from a website on them is any indication:

"the spider throws tough stiff web material over the victim and disables its mobility"
MaXoR says: Jul 22, 2010. 11:23 AM
I think most people when talking about a "Daddy Long Legs" will be referring to a harvestman arachnid. You didn't exactly use a well known website to source your information, and most side websites will get certain details mixed up. Either way, the harvestman arachnid is not even capable of producing web in any great quantity, if at all. If you see one in a web, he is trapped, and going to die! Although yes, on Myth Busters they proved that it is possible to entice a harvestman into biting into your flesh, a reaction because of it doesn't mean it punctured the .5 - 4mm of flesh to the other side, likely only puncturing the first layer or two, and causing an irritation. The average one's fangs are only .25mm long, and they don't have strong uncate fang muscles either. They do however have a wonderful myth that they have some of the most poisonous venom, and that likely stemmed from the fact they prey on redback's (Part of the black widow family) and win consistently, however scientists have learned it's merely because they are quicker, and get the upper hand, or neck...lol!
frabotta says: Dec 19, 2010. 9:50 AM
@MaXoR

I believe you are confusing harvestmen (order Phalangida) with spider, Pholcus phalangioides (featured on Myth Busters), that has a near-cosmopolitan distribution. As true spiders, Pholcus DOES possess fangs, can penetrate human, skin, and 'throws' stiff web silk around their prey.

Harvestmen (order Phalangida or Opiliones), while arachnids, are not spiders and possess neither fangs nor silk glands.
HisDivineShadow says: Aug 28, 2010. 12:39 PM
A thread of spider silk the thickness of a pencil cna stop (cut through) military jerts moving at full speed...
mettaurlover says: Oct 28, 2010. 12:12 PM
Yeah. I need to collect a LOT of silk... Gonna make a climbing rope if I can.
manadhon says: Jul 22, 2010. 12:47 PM
It's kinda nice knowing that here in Michigan all I have to worry about is the brown recluse (which is not native to Michigan as it comes in with wood shipments), and the northern black widow (which sadly, is native to Michigan). Other than those two species, there isn't really any interesting species of arachnid here
nobelium106 says: Jul 25, 2010. 7:44 PM
For the record, the brown recluse is actually much more poisonous than the black widow. Black widow bites are painful, cause inflammation, and require doctors etc. Brown recluse bites cause necrosis of the flesh rapidly and require a doctor for not only anti venom, but usually removal of flesh to amputation.
bundatbrown says: Aug 27, 2010. 6:45 PM
Where I live (west coast of North America) we have many black and brown widows. It's weird because brown widows are from Florida. The Brown recluse is the most poisonous spider,and following that is the brown widow. They're not really dangerous though, because they don't bite as often as the black widow.
chad oliver says: Jul 22, 2010. 8:15 PM
Yeah, but New Zealand is even better: no spiders that could hurt anything bigger than a rabbit (if that). Plus, no snakes or other bitey things!
manadhon says: Jul 24, 2010. 8:01 AM
your wrong about that.there are poisonous spiders in New Zealand, three species to be exact.the kapito ,white- tailed and red back spiders. 1.red back bites can cause severe pain, aches and profuse sweating. 2.kapito bites may lead to severe pain around the bite area and possible muscle cramps. 3.A White-tailed spider bite usually leads to severe pain and swelling around the bite area, but there are no long-lasting effects. and yes you are right about the snakes and other "bitey" things"
yoshi1 says: Jan 21, 2011. 4:51 AM
But aren't there mosquitoes? They can kill!
manadhon says: Jan 26, 2011. 1:36 PM
most mosquitoes in michigan suck blood. few will carry diseases as disease carrying mosquitoes are more common in tropical regions
lop145 says: Jul 19, 2010. 1:39 PM
no dangerous spiders here exept if your allergic. and there's just one spider that has a nasty wasp like bite but that one lives under water.
chuckr44 says: Jul 20, 2010. 9:11 AM
The underwater spiders I know in the US do not live underwater, but they do hunt underwater by carrying a bubble of air with them.
lop145 says: Aug 5, 2010. 9:31 AM
this one makes an underwater web and fills it with air. they are quite rare and only live in heavily grown underwater places. although holland is a country with a lot of water not mutch is so grown that it can make its web there. never been bitten by one and i'm not planning to be bitten anytime soon.
Iridium7 says: Jul 21, 2010. 12:13 AM
You are kidding right? How can they make a air bubble? I didn't even know they had lungs?
chuckr44 says: Jul 22, 2010. 4:38 AM
Try this link for a pic: http://www.answersingenesis.org/articles/am/v3/n2/scuba-spiders
chuckr44 says: Jul 22, 2010. 4:36 AM
They don't "make" an air bubble, the air gets trapped between the hairs on the outside of their body and makes the body look silver. They do not have lungs, their respiratory system, I believe, is an open system. Air travels freely inside their body cavity.
SaFemme says: Jul 22, 2010. 9:51 AM
Actually, yes, some spiders do "collect" air at the surface to fill their air bubble underwater...
frabotta says: Jul 22, 2010. 8:13 AM
Arachnids, including spiders and scorpions have a respiratory organ called a "book-lung" because it looks like a large open book with the pages "leaved-out" to each side. Attached is an image of a tarantula's well-developed book-lungs.
naruto the ninja13 says: Jul 19, 2010. 9:04 PM
eek! underwater spiders? NOW im scarred!!!
ProfessorMcKillswitch says: Jul 25, 2010. 9:03 PM
Has anybody tried using it to sew clothes up with? Does it work well? Be really cocol if the thread were really practical.
alegriagarden says: Jul 22, 2010. 5:56 PM
Thats a great instructable. May I ask how much thread you have collected so far ? I am a huge fan of spiders i think they are incredible creatures and often had them as pets. Thanks again for the tutorial.
Persona (author) says: Jul 24, 2010. 12:26 PM
I have about two feet of it.
MaXoR says: Jul 22, 2010. 11:27 AM
This is a great instructable, I like this idea. So if you were to harvest enough silk, weave it into a fiberglass structure, and epoxy it, wouldn't it make some of the lightest, strongest surf boards in the world? Or better yet, imaging a silk fiber hood, or door on your car..... can we say indestructible????? lol, just a thought
MaXoR says: Jul 22, 2010. 11:34 AM
I also am not really concerned about harming captive bread spiders for the sake of eco friendly-ness for the masses (What does more harm, all the plastic in our world, or 15,000,000 dead spiders a day that aren't even from the wild, and bread in captivity)..... Parts made from silk thread would be bio-degradable to an extent, however if a bio-degradable epoxy could be used, or maybe just have a treatment to use on scrap parts, that would break down the epoxy, and leave just the fiber. Then you either recycle the fiber, or harvest more, and let that just degrade to dirt.

Don't know if any are on the spiders side vs the plastic side, however if we keep polluting with our plastic's, there won't be spiders anyway..... so choose your poison.....
lukieh says: Jul 22, 2010. 11:38 PM
Whether or not you're concerned, if I remember correctly attempts so far to breed spiders in any kind of intensive way fail because they eat each other.
MaXoR says: Jul 23, 2010. 10:42 AM
That sucks, It would be nice to have a great alternative, however I'm sure someone would have already done it by now if it was possible, as with most things it seems...lol I was just throwing that out there since I thought it would work from what I was hearing and reading. However if large operations don't work because they are cannables and eat eachother, then I can definitely see how that would not work. Thank you for that info.
eye.gee says: Jul 22, 2010. 5:40 PM
It's seems like collecting the silk is as more an act of appreciation to the spiders than it is about making thread. I have to say, insects are the only liviing things that creep me out, but I do have a great appreciation for their webs, and I love the idea of what you're doing.
Slayman says: Jul 22, 2010. 11:56 PM
I'd like to point out spiders are in fact not insects they are arachnids and have 8 legs, while insects have 6 legs. So you do not need to be grossed out anymore now that you know!
eye.gee says: Jul 23, 2010. 5:59 AM
That is a technicality that does nothing to lessen the creepiness factor. With the possible exception of possums, I'me fine with anything that has 4 legs or less. Do Snakes, rodents, toads - all okay in my book. That's not to say I don't appreciate spiders. Their webs are miracles of nature, and as you point out they eat other bugs. Plus, I read Charlott's Web.
jaketheman987 says: Jul 23, 2010. 8:13 AM
Haha, "Plus, I read Charlott's Webb" Hahaha I found that really funny :)
The Real Dave says: Jul 23, 2010. 5:16 AM
By weight, spider silk is 88 times stronger than steel wire. So yes, your seams will be much stronger than the fabric >.<
snowmoonelk says: Jul 23, 2010. 4:34 AM
UGH, Gross!!!
Murphys Laws says: Jul 22, 2010. 6:01 PM
If I start today, I might be able to make the thread, & knit it into a bracelet some time before I die. My daughter can make the earrings & my granddaughter could make a necklace with beads.
l8nite says: Jul 17, 2010. 10:19 PM
this is cool and I learned something, we've always called the golden orb a bananna spider because we didn't know any other name, some years we only have a few and other years they are all over and some are HUGE. One would build a web over the dining room window, the light attracted all kinds of bugs to it
MacGyver1138 says: Jul 22, 2010. 7:55 AM
At least it was the Golden Orb Weaver you were referring to as a Banana Spider, because the other spider referred to as a Banana Spider is the Brazilian Wandering Spider, and it is big, mean, and dangerous!
frabotta says: Jul 22, 2010. 8:29 AM
If you have the opportunity to see the golden orb spider tapestry at AMNH (it is in the Canoe Room near the 77th entrance), don't miss it. It is amazingly beautiful and delicate. It took the efforts of 70 people who collected spiders daily from webs from Antananarivo, the capital of Madagascar, and the surrounding countryside. More workers then drew the silk from the spiders with hand-powered machines, with each spider producing about 80 feet of silk filament. After the milking process, the spiders were returned to the location from where they were collected. Each individual thread used for weaving the tapestry was made by twisting ~100 to ~1000 individual spider silk filaments together, depending on the final thickness of the thread desired.
rush2ady says: Jul 22, 2010. 1:58 PM
the spider version of being abducted by aliens :) wonder if its' friends believe what happened, or if they think to themselves, dang, u r one crazy spider!
golddigger1559 says: Jul 20, 2010. 5:43 AM
watch out for those brown recluse they have a nasty venom that destroys the flesh around the bite leaving a gapping hole http://users.hcis.net/tomboy/photoalbums/martyiniraq/recluse%20bite%20day%2010_jpg.html
Thoth says: Jul 22, 2010. 7:52 AM
Brown Recluse spiders don't build conspicuous webs. So unless you as long as you stick to orb weaver webs or other webs out in the open you will avoid running into either recluse or widow spiders.
Silvester10528 says: Jul 22, 2010. 6:50 AM
I used to live in south Florida and I have seen those crab spiders get up to 1/2 inch wide or even a bit more! I have seen their webs span as much as 5 or 6 feet and it's like walking into wire mesh if you aren't paying attention... Creepy nasty little things!! Very neat instructable!
Iridium7 says: Jul 18, 2010. 10:14 PM
I am wondering, how sticky is the tread? could you make a real spool of thread this way?
Persona (author) says: Jul 19, 2010. 2:03 AM
The thread isn't sticky at all once it's twisted, though I have no idea why.
Iridium7 says: Jul 19, 2010. 3:15 PM
ya know I think it is ironic because I have a severe case of arachnophobia, but I am still going to try this out.
Persona (author) says: Jul 21, 2010. 1:46 PM
I empathize, though I am not arachnophobic (can you tell?). I've faced certain phobias just in order to do a weird project. Good Luck!
Iridium7 says: Jul 19, 2010. 3:13 PM
cool I have spider webs ALL OVER MY YARD, perfect for harvesting!
Enricommuter says: Jul 19, 2010. 8:43 AM
I really like the idea of using spider silk. Thanks for the instructable. The links you put in above lead to some fascinating stuff. Have you used the silk you collected?
Persona (author) says: Jul 21, 2010. 1:43 PM
I have not used it yet, but I will post what I do use it for, when I do.
sneezebig says: Jul 19, 2010. 6:51 PM
This is the first time I have ever commented on anything on the internet. This is so cool!!! I so often grumble and mumble, as I'm cleaning spider webs from every corner of my porch, that I should be using it for something. Not until this instructable have I actually decided to do it. Thanks!!! My boys will love this. Culturespy has also inspired me to do a little research on the old art of web harvesting. My 11 year old will come up with endless ideas for this.
Persona (author) says: Jul 21, 2010. 1:42 PM
I'm glad I could give you ideas! Good luck!
jongscx says: Jul 20, 2010. 11:58 AM
Now all we need is for the "How to genetically splice spider silk proteins into goats' milk and extract" instructable to be written and we're in business....
chuckr44 says: Jul 20, 2010. 9:15 AM
Here we go. Your crab spider is a "crown crab spider". Details here: http://bugguide.net/node/view/191652 AKA "spinybacked orb weaver".
norml says: Jul 20, 2010. 9:06 AM
When I went to college with Micronesians they told me about using spider webs for fishing. I only half believed them until I saw it on video. It's an amazing testament to the strength of spider silk. http://scienceblogs.com/grrlscientist/2009/08/spider_web_fishing_in_the_sout.php
pppoootttzzz says: Jul 18, 2010. 8:51 PM
This looks super cool. I live in new mexico though, which doesn't really have very many spiders that make big webs :( also we have black widows and brown recluses :,(
Persona (author) says: Jul 19, 2010. 2:15 AM
Yes, but you have scorpions in New Mexico, which is a whole other source for insane arachnid adventures! I don't know what they are, these adventures, but still, scorpions are cool.
pppoootttzzz says: Jul 19, 2010. 9:03 PM
And LOTS of these guys too: http://en.wikipedia.org/wiki/Thelyphonida . I was just kinda bummed that silk collection may be more difficult (but not impossible)
Re-design says: Jul 19, 2010. 4:58 PM
Very nice instrucable.
Culturespy says: Jul 17, 2010. 11:41 PM
When I was little my grandfather used to catch spiders and tape them down to blocks of wood with little cork risers on them. He'd pick up a silk thread from the spinnerets of the still live spiders and wind it on a glass rod. He later used the spider silk to replace broken cross-hairs in rifle scopes and survey transits. Not sure if you could do the same thing to make thread or not. It's pretty creepy to watch someone harvest the silk from a spider like that.
Re-design says: Jul 19, 2010. 4:58 PM
I was going to mention the use of spider silk in making high quality sighting equipment.
Persona (author) says: Jul 18, 2010. 10:58 AM
I think the silk used to make the cloth in the picture in the last step was "harvested" directly from the spiders too. I agree though, with you and TyrenRaven. Its not something I would personally feel comfortable doing.
ElusiveGreen says: Jul 18, 2010. 9:21 AM
I think with the author's method there are a few benefits over this. First of all, no spiders were harmed in the making of the thread. Second it allows the spiders to constantly renew and replenish the supply, unless your grandfather fed them as well. I think the most important feature away from the pro-spider approach is the fact that the act of initially twisting the webs gives it an initial strength that you enhance later.
Culturespy says: Jul 19, 2010. 9:06 AM
I think he usually just caught them and let them go if they survived being handled. This used to be very common practice. Up til about WW2 it wouldn't have even sounded weird. I think it was more common to wind it on a two pronged wire "fork" than a glass rod but it wasn't a rare thing to see. There are a lot of technologies out there that seem pretty odd these days but were pretty normal at one time. Harvesting silk from spiders is probably always going to hurt them though, they tend to shed legs even if you "startle" them.
MaXoR says: Jul 22, 2010. 11:03 AM
How about if you stuck them to the end of a pin (I didn't say skewer him like a kabob) with some super glue, then you simply heat the end of the pin when you want to release them, it should BARELY heat up their exoskeleton, and would possibly allow you to handle them with less stress. In my experience with physically handling the spiders out here in Canada, (We have the brown recluse, and Black widow too....) I haven't really noticed them shed legs too quickly, maybe it's different out here, but just wanted to share that.
HazardRush says: Jul 19, 2010. 12:34 PM
Great idea and instructable, but I could never do this. It would make me vomit; spiders disgust me.
zenser says: Jul 19, 2010. 10:17 AM
Ooooh, ooooooh, coooool. Thanks for this, very useful, well thought out.
trailleadr says: Jul 19, 2010. 8:13 AM
Very interesting. But I think I'll pass. Spiders and their webs....bleh.
raja681 says: Jul 18, 2010. 7:56 PM
here is something creepy in a lab on a farm in Sweden they are making a goat that u can milk and it has milk and spider silk..............MILK SILK ANYONE!!!
Technologic says: Jul 19, 2010. 3:37 AM
Haha. I saw a documentary about that a few years ago. They would extract the silk proteins from the milk of the genetically modified goats or something like that. It was less productive than pulling the web right out of the spiders. But I guess the crazy scientists scientists just wanna have fun.
Persona (author) says: Jul 19, 2010. 2:08 AM
I think I remember hearing about that! It makes NO SENSE!
Culturespy says: Jul 19, 2010. 8:54 AM
I've seen "spider goats" at Purdue University. It actually makes a lot of sense. It's come a long way in a past several years. The milk is still "drinkable". The silk protein doesn't present as a fiber in the milk, it needs a chemical catalyst to be extracted. The goats have a number of advantages, they don't bite(well not like spiders do), they are easier to milk than spiders, they don't eat each other and they are still useful for things that goats are useful for. The process is still pretty young as technologies go but there's a lot of promise in it.
raja681 says: Feb 28, 2011. 9:29 PM
ya i really want one of the spider goats
yoyology says: Jul 18, 2010. 11:39 AM
I am in awe. What an amazing instructable. Thank you!
Persona (author) says: Jul 19, 2010. 1:57 AM
Thanks you!
stramel says: Jul 18, 2010. 10:49 PM
often a black widow does not have a full hour glass shape on its stomach but more often two red dots close to each other. Be careful, black widows and brown recluses are very dangerous and poisonous but if bitten by one go to the doctor immediately. If put off it can lead to bad/deadly side effects.
luvit says: Jul 18, 2010. 9:06 PM
soon enough you can knit new clothes for an emperor.. post pics, please.
corey11 says: Jul 18, 2010. 4:37 PM
Although the black widow is very deadly, if you can harvest a web, you will be able to make very strong thread. Scientists have proven that black widows web has super-arachnid like strength (lol, but it really does). They would make ropes but it's just the risk of getting bitten and they would get very little web that they don't mass produce it. And I think it is valubale ( ie you you might e able to sell it to universities and get some good cash)
SinAmos says: Jul 18, 2010. 1:03 PM
Bizarre, yet totally my style. Kewl Beans.
macgyverfan says: Jul 18, 2010. 11:44 AM
some day I am going to synthesize this fiber and combine it with nanofiber and make the best paracord ever.
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