How to make a waxed leather water bottle (Photo tutorial)

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Eric_Methven

Bushcrafter (boy, I've got a lot to say!)
Apr 20, 2005
3,600
42
73
Durham City, County Durham
Here's a full photo tutorial for making a waxed leather drinking flask.
There is more than one way to make one, but this is one of the ways I do my commercial ones.

This tutorial will be in three parts. 1) Cutting out, marking and stitching. 2) Wetting and forming. 3) Emptying and hot wax dipping.

The material I am using is 3mm veg tanned shoulder.

I have made a template that you can print out for your own flasks, It's a PDF file Flask Template.

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A piece of leather with the image from the template drawn on it. When you do these, draw round once then flip the template over before drawing the second one. That way, if there are any inconsistancies with symetry, both halves will still come together properly.

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Then use a sharp knife to cut roughly round the two flask halves.

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These are going to be sewn together, so I find the best way to keep them in register is to glue the edges.

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I only glue about a quarter inch in. That won't make any difference when opening the flask up as the stitching will cover that anyway.

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Both halves joined together. Be careful when joining them if you are using impact adhesive. Once contact is made, they won't come apart.

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Now the edges are still rough. This is when I sand down the edges to get a nice smooth edge.

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We need smooth edges, because we are going to cut some grooves where we will run the stitch wheel. The groover uses the edge of the leather as a guide, so the smoother the edge, the neater the groove will be.

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Cutting the groove in the leather.

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Here the grooves have ben cut, ready for the stitching wheel. The groove also allows the thread to sit below the surface of the flask. Not essential, but tidy.

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Now before you can mark the leather with the stitching wheel, you need to soften it, so it takes an impression of the wheel. We do that by wetting it under runnng water.

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We run the stitch wheel around the grooves. It looks good, but it's function really is to mark where the holes will go for stitching the two halves.

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Here is the stitch wheel finished, ready to sew now once the leather has dried a bit.

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This is what I'll be using to make the holes. It's a Dremmel copy with an extention shank and a tiny little model makers drill bit the same diameter as the needles.

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Here's a close up.

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The holes are drilled on a block of scrap wood, keeping the drill completely vertical so it goes through at 90°

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Here is the flask with all the holes drilled.

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At this stage, I prepare to sew the two halves together. I am using a stitching clam between my knees to hold the work steady. This allows both hands free to do the stitching. I am using artificial sinew and what is known as the saddle stitch. The sinew is threaded onto two harness needles (blunts), one at each end.
These are then passed through the same hole, but in opposite directions. Then they go through the next hole and so on, making figure eights all the way along. They are pulled tight after every stitch (or every couple of stitches once your arms get tired).

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Hint: When preparing the artificial sinew, only use lengths long enough for your outstretched arms. You will need four lengths or so to complete the flask, but if you have one long length, you will spend ages pulling it through the holes and there is a likelyhood that it will get tangled (especially if using waxed linen thread).
When you get near the end of a piece, back stitch four holes, then forward two - so you'll have 6 bits of sinew going through that last hole. Then just snip off flush. Don't worry about tying a knot, The packed sinew will keep it there and the hot waxing will seal it in later on.

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Here's the flask all sewn up and ready to stuff with pearl barley to take it's shape.

Part two next....
 

Eric_Methven

Bushcrafter (boy, I've got a lot to say!)
Apr 20, 2005
3,600
42
73
Durham City, County Durham
At this stage we are going to shape the flask.

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The leather needs to be really wet, so we take a bowl of tepid water

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The flask is dipped in the wqater and submerged.

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You'll see bubbles escaping from the leather. This is a good thing. The air is being expelled, the colagen is softening and the leather is becoming maliable and soft.
Be careful at this stage. Any tools or objects that come into contact with the flask at this stage will mark the leather and it won't come out. So handle with care.

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I open the hole in the top up, and use my fist like a funnel. Then I use a cup and just pour some pearl barley into the flask.

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It fills up pretty quickly so it need a bit of help getting in there. I find blowing it open like a balloon opens it enough for the barley to fall to the bottom.

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Now I take a piece of dowel and ram the barley in. Don't be gentle, really ram it down hard. You want the force to be enough so it forces the barley to push and stretch the leather sides outward.

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You can see here that it is starting to swell. There's about a cup and a half of barley in at this point.
Keep pouring, blowing and ramming until the barley is right near the top. But leave enough room to fit the cork.

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Here's the flask full of barley and fully shaped. The cork is in and it is important to fit a cork. The reason is to make the mouth nice and round. If it dries oval (which it would otherwise do) you will find it difficult to fit a stopper for it later, once it's waxed.

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Here's the cork from the top.

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Now all it needs is to dry thoroughly (certainly overnight - possibly two days). I put mine on the mantlepiece above the solid fuel fire, but I have used an airing cupboard before.
 

Eric_Methven

Bushcrafter (boy, I've got a lot to say!)
Apr 20, 2005
3,600
42
73
Durham City, County Durham
This part deals with getting the barley out of the flask and hot waxing it to make it suitable for holding liquids.

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You can see the difference in colour between the dry flask and the wet one I set on the mantlepiece to dry. This is the following morning. Nice and dry and ready to empty.

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Here's what I need to get all the barley out. Metal nuts and an old bicycle spoke. Plus someplace to put the barley. My barley sack has a lot of barley in it, but if you are just making one for yourself, you will only need a fraction. I do six at a time usually which is why I have so much.

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These are the type of nuts I use to act as an abraider and knock the stuborn bits of barley off the inside. The spoke is to run round the inside initially and remove easy to get at bits. The nuts get the ones that are hiding in the corners.

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To start, I remove the cork and just tip the barley out into the plastic basin. Then I put the barley into it's container out of the way.

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I pop the nuts into the flask, place my thumb over the opening and shake like hell for a minute or so. Then I tip it all out into the basin.

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This is what comes out

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Here are the nuts and dislodged barley after one good shake. Now you put the nuts back in, empty the barley into the sack and shake again. Then tip it out and see how much barley came out. Then you keep repeating that until all you get out are nuts. (If you want to do this under field conditions, small pebbles will work).
The flask is now ready for waxing.

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Here's what you'll need for the waxing. Worktop covered with paper. Heavy duty rubber gloves (your fingers will get dipped into very hot wax. If it gets on your skin, it will hurt.

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This is my double boiler. Wax in the top part and water in the bottom part. It is essential that a double boiler is used. Even a pan in another pan of water will do, but NEVER put a pan of wax directly on the heat source. Two reasons. One, it may reach flash point and cause a nasty fire, and Two, too hot wax will cook the leather and make it go shrunken and crinkled, completely ruining it. If it can't get hotter than the boiling point of the water, it can't do either 1 or 2 above.

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Now put on the gloves and lower the flask into the wax. You'll have to push it under the surface until it fills with wax. It will want to float. Get it submerges as quickly as possible though otherwise the wax will start to set on the still cold leather. It is only when the leather gets hot in there that it starts to penetrate into the fibres of the leather.

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Once it is submerged, you'll see bubbles come to the surface of the wax. That is the air being expelled from inside the leather and being replaced by wax.

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Gently move the flask around, flipping it over to ensure all the air from inside came out and that there are no air pockets left.

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When the bubbles stop rising, you can lift it out. Be careful at this stage because it is very slippery and if it drops back in there, you'll end up getting splashed - not nice!

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Invert it long enough to make sure it is drained of molten wax.

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That shiny look won't last long. All that is is a film of excess wax sitting on the surface. After a couple of minutes it will turn into a milky film. It needs to be removed.

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To remove it, we use kitchen towel - lots of it. I made the mistake of using my dear wife's tea towels once. Don't ask, all I'll say is it wasn't pleasant when she found them.

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Now I didn't mention it before, but I tied a bit of lace through one of the holes so I could keep hold when I dipped it. Now is the time to remove it.
If I don't, it will get in the way and stop me wiping all the excess wax away.

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Keep wiping until the surface looks duller and keep changing the kitchen towels for fresh ones as the old ones get clogged with wax.

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Once the flask is waxed, it is essential to give it a water test - to check for leaks. If it is going to leak from anywhere, it will be along the seam, where the stitching is. If it does leak, the cure is to pour a small cup of wax inside and rock the flask from side to side so it runs along the inside of the seam. Then pour the excess out before it sets. This has to be done on a cold flask of course, so it creates an instant seal.
To check for leaks though, I give it a one hour test. Fill the flask with cold water, until a bead forms on the top. Then set the flask aside and check after an hour. If there is any loss, nomatter how slow, that bead of water will sink down inside. So if the bead is still there after an hour, it is guaranteed to be sound and leak free.

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Here is the finished flask after I made a nice rustic cherrywood stopper, and gave it a good polish.
It is now ready to wrap and post off to it's new owner.

Well, I hope you found this tutorial of use and I hope it was clear enough. I appreciate feedback so let me know if you didn't understand any of it and ask any questions you may have.

Thanks for looking,

Eric
 
Last edited:

Eric_Methven

Bushcrafter (boy, I've got a lot to say!)
Apr 20, 2005
3,600
42
73
Durham City, County Durham
Hi Eric.
Thanks for posting this, its a really great tutorial.

What do you use for wax?

Daniel.

Just pure beeswax. There's about two hundred quids worth in that pan. Though after the initial expense it just needs topping up with odd lumps now and again.
Don't be tempted to use parafin wax or normal candles though. It's too soft and it's not food safe.

Eric
 
Feb 15, 2011
3,860
2
Elsewhere
Great pics, great tutorial & a beautiful finished object.......I reckon this would hold no more than 1/2 a litre, but they could be made larger......thanks for showing us the whole process.
 

DaveWL

Forager
Mar 13, 2011
173
0
Cheshire, UK
Brilliant post.

Thanks for going to the effort.

MrsDave fancies leather crafting. We'll have to see if I can get some nice water bottles and tinder pouches out of the deal :)

Any hints on source for the beeswax? Local apiary?
 

Eric_Methven

Bushcrafter (boy, I've got a lot to say!)
Apr 20, 2005
3,600
42
73
Durham City, County Durham
Brilliant post.

Thanks for going to the effort.

MrsDave fancies leather crafting. We'll have to see if I can get some nice water bottles and tinder pouches out of the deal :)

Any hints on source for the beeswax? Local apiary?

I got my first batch from the local bee society. But I got later batches from Tengu. I don't know if she still has access to beeswax, but it's worth asking her.
 

Eric_Methven

Bushcrafter (boy, I've got a lot to say!)
Apr 20, 2005
3,600
42
73
Durham City, County Durham
Great pics, great tutorial & a beautiful finished object.......I reckon this would hold no more than 1/2 a litre, but they could be made larger......thanks for showing us the whole process.

They can be made as large or as small as you want. The determining factor is the size of the wax pan. There are other ways to wax a really big item, but it's pretty messy, uncertain and time consuming.
 

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