How to convert DOMKE bags to magnetic closure

3DrJ

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Domke small bags (F-5XA/B) are just right for mFT gear and are justly popular. However, the bag can be improved in a couple of ways: the Velcro flap closure is "noisy" when opening the flap.

The bag is also missing a "pick-up" handle, a feature nearly all other bags have, but I'll leave that for a separate "How-To".

I "converted" my Domke XA to magnetic flap closure by attaching strong "rare-earth" magnets to a wide adhesive-backed Velcro strip. Matching thin magnetic stainless steel "plates" were adhered to a corresponding Velcro piece mounted on the flap's Velcro closure.

Two magnets are required and are sold at a local hardware store. Round, ~18mm diameter, and look like this:

[ATTACH alt="18mm diameter "rare-earth" (high-strength) magnet. (Mfg. by "MagnetSource.com")"]424012[/ATTACH]
18mm diameter "rare-earth" (high-strength) magnet. (Mfg. by "MagnetSource.com")

The magnetic plates can be any thin magnetic ferrous material, but stainless is nicest. I used an old icing spatula also sold at hardware and kitchen supply stores and rather inexpensive. I use them for mixing artist colors and inks for printmaking, much cheaper than the art store versions.

Icing spatula sold at hardware, kitchen supply stores. Made of magnetic stainless. Excellent in the artist's studio for paint mixing. Usually sell for $5 or so.
Icing spatula sold at hardware, kitchen supply stores. Made of magnetic stainless. Excellent in the artist's studio for paint mixing. Usually sell for $5 or so.

The conversion is really quite simple. The following should help make it clear:

Step 1.

We'll be using 2" (5cm) wide Velcro pieces (hook and loop). The loop (hard surface) piece of Velcro is cut to match the shape of the Velcro area of the flap.

The unmodified flap.
The unmodified flap.

Flap with Velcro marked for cutting to size (and shape).
Flap with Velcro marked for cutting to size (and shape).

Next, using sections cut from the spatula (with an abrasive wheel, or by hand with a hacksaw--pretty easy to do). Make sure to file down rough edges so the metal plates are flat.

Prepared metal plates and where they will be placed on the Velcro modifier.
Prepared metal plates and where they will be placed on the Velcro modifier.

Remove backing from the flap Velcro. Carefully adhere the metal plates in position (see photos). Try to line them up straight, but great precision isn't critical.

Metal plates adhered to black Velcro strips cut to size/shape. Note the spacing and alignment of the plates--they will match the magnets on front of bag.
Metal plates adhered to black Velcro strips cut to size/shape. Note the spacing and alignment of the plates--they will match the magnets on front of bag.

Cover the entire adhesive surface with thin polyethylene sheet. A clear garbage bag can be cut up for the purpose and will work fine.

Plates in position. Remaining open adhesive surface is very sticky. Use thin polyethylene sheeting to fix problem. Trim excess poly at edge of black Velcro.
Plates in position. Remaining open adhesive surface is very sticky. Use thin polyethylene sheeting to fix problem. Trim excess poly at edge of black Velcro.

Then trim the surplus poly film from the Velcro (after detaching our Velcro from the flap). After trimming, put the Velcro plate holder back in position on the flap.

Step 2.

Similarly, cut the hook (soft) Velcro piece to match across the whole Velcro area on the front of the bag. Attach it hook side down onto the bag. Then line up the flap plates centered on the front Velcro piece (that will hold the magnets). Mark where the magnets will go.

Line up flap plates with position of magnets. Mark (red dots here) position of magnet placement.
Line up flap plates with position of magnets. Mark (red dots here) position of magnet placement.

Be aware that the adhesive is very strong. Once "glued" the magnets are very difficult to remove without destroying the Velcro piece. It's not too hard to get in the right position. Use the line up markings to put it where it ought to be.

Carefully remove the covering to expose the adhesive surface. Near the bottom of the adhesive area vary carefully place the round magnets, leaving a few millimeters of sticky area between the lowest part of the magnets and the edge of the adhesive surface.

Magnets adhered to sticky surface of black Velcro. Note alignment with flap plates (red markings). Also notice the magnet bottoms are 2-3 mm above bottom edge of Velcro.
Magnets adhered to sticky surface of black Velcro. Note alignment with flap plates (red markings). Also notice the magnet bottoms are 2-3 mm above bottom edge of Velcro.

Again cover the whole Velcro adhesive area including the magnets with thin poly and trim the excess as before.

The adhesive surface covered with poly film, including the magnets. Trim poly to edge of Velcro.
The adhesive surface covered with poly film, including the magnets. Trim poly to edge of Velcro.

Once our plate and magnet holders are trimmed and attached in place on the bag, that's it, we're ALL DONE! Enjoy your quiet Domke bag!

All right!! Poly trimmed from black Velcro edges, and it's ready to go. The flap plates and magnets line up nicely! It will work perfectly.
All right!! Poly trimmed from black Velcro edges, and it's ready to go. The flap plates and magnets line up nicely! It will work perfectly.

Have fun with it. Any questions, fire away...

Jules.

--
Artists must not only see, but see what they are seeing.
 

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Nice idea. The only thing I've change if I was making this mod, is switching the plastic out for something a little more durable, perhaps a material of some sort.
 
I've got two different Domke bags that I would love to convert from velcro to magnetic. Thank you for the photo essay on how to do this. This will even work on my 20 year old bag (yes the Velcro is still noisy), nothing like updating a favored piece of old equipment for a few dollars.
 
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SUPER Awesome!!! Thanks for taking the time to make this.

And the best part is that is non destructive. You can return to your noisy flaps anytime.

BTW, someone here commented that maybe is not a bad idea to have a noisy velcro flap sometimes, specially when you are surrounded by a lot of people, when in a public market, on the subway, in the airport, etc. since is also a warning if someone stealthily tries to access to your bag. And you can quiet it up once you reach you hotel, and are heading to the museum or something like that.

Thankfully the F-5XB have a big zipper below the flap, that will block the entry to unwanted hands.
 
Why go to all that work? Just place the magnets against the bag and put the Velcro over them to hold them.

Also you can just use the lids from soup cans instead of a spatula, much easier to cut to shape.

Owen
 
Nice idea. The only thing I've change if I was making this mod, is switching the plastic out for something a little more durable, perhaps a material of some sort.
In a prior version, I covered the adhesive with a gauzy linen cloth I'd originally acquired for a bookbinding project. It's a very classy fabric.

The only problem was it tended to fray and lose adhesion after a while.

Now I'm thinking that another option would be fine mesh screen printing fabric. Something like 400 or finer. It's polyester, very strong and durable. I'll have to experiment with it a bit but it might work.

Jules.
 
I've got two different Domke bags that I would love to convert from velcro to magnetic. Thank you for the photo essay on how to do this. This will even work on my 20 year old bag (yes the Velcro is still noisy), nothing like updating a favored piece of old equipment for a few dollars.
Your welcome! No reason it wouldn't work. Glad to know the bags have a lot of life in them. Sounds a little like me. After 20 (and more!) years on the job, there's still room for improvement...

Jules.
 
SUPER Awesome!!! Thanks for taking the time to make this.

And the best part is that is non destructive. You can return to your noisy flaps anytime.
I'm glad it lives up to expectations!
BTW, someone here commented that maybe is not a bad idea to have a noisy velcro flap sometimes, specially when you are surrounded by a lot of people, when in a public market, on the subway, in the airport, etc. since is also a warning if someone stealthily tries to access to your bag. And you can quiet it up once you reach you hotel, and are heading to the museum or something like that.

Thankfully the F-5XB have a big zipper below the flap, that will block the entry to unwanted hands.
Same with the F-5XA, the "double security" of the zipper is very reassuring. After installing the magnetic catch, I've never seen any reason to not use it that way.

When I'm out in a crowd, I keep a pretty close eye on the bag anyway.

If some thief is going to steal my gear, he/she is not going to "cherry pick" items but try to grab the whole bag and run off with it. I don't think the magnetic mod lends increased vulnerability to theft.

However, if unzipped, the bag might be more likely to spill contents since the magnets don't grab as tight as the original Velcro closure. Just a factor to be aware of.
 
Why go to all that work? Just place the magnets against the bag and put the Velcro over them to hold them.

Also you can just use the lids from soup cans instead of a spatula, much easier to cut to shape.

Owen
Don't believe this plan will work. For one thing, the magnets would slip around--they need to be solidly anchored. The covering Velcro would not hold the magnets steadily enough.

A second problem is the thickness of the Velcro would keep the magnet and metal too far apart and would not hold with sufficient force to work as intended.

You certainly could use ferrous metal "tin" cans, lids or otherwise, for metal plates. (Some cans are aluminum/plastic which would not work.)

The disadvantage is getting the plates shaped and flat enough. Also, the final plates have less bend resistance vs. the tempered stainless blade. But no question the can-metal source can be used, saving a few bucks at the cost of more labor.

Hope that helps!

Jules.
 
Why go to all that work? Just place the magnets against the bag and put the Velcro over them to hold them.

Also you can just use the lids from soup cans instead of a spatula, much easier to cut to shape.

Owen
Don't believe this plan will work. For one thing, the magnets would slip around--they need to be solidly anchored. The covering Velcro would not hold the magnets steadily enough.

A second problem is the thickness of the Velcro would keep the magnet and metal too far apart and would not hold with sufficient force to work as intended.

You certainly could use ferrous metal "tin" cans, lids or otherwise, for metal plates. (Some cans are aluminum/plastic which would not work.)

The disadvantage is getting the plates shaped and flat enough. Also, the final plates have less bend resistance vs. the tempered stainless blade. But no question the can-metal source can be used, saving a few bucks at the cost of more labor.

Hope that helps!
 
Why go to all that work? Just place the magnets against the bag and put the Velcro over them to hold them.

Also you can just use the lids from soup cans instead of a spatula, much easier to cut to shape.

Owen
Don't believe this plan will work. For one thing, the magnets would slip around--they need to be solidly anchored. The covering Velcro would not hold the magnets steadily enough.

A second problem is the thickness of the Velcro would keep the magnet and metal too far apart and would not hold with sufficient force to work as intended.

You certainly could use ferrous metal "tin" cans, lids or otherwise, for metal plates. (Some cans are aluminum/plastic which would not work.)

The disadvantage is getting the plates shaped and flat enough. Also, the final plates have less bend resistance vs. the tempered stainless blade. But no question the can-metal source can be used, saving a few bucks at the cost of more labor.

Hope that helps!

Jules.
 
I never said double up the magnets, I was just saying that they are so strong that two together were hard to get apart.

Owen
 
Another option would be to just cover up half or more of the bags Velcro, less noise and effort to open. Another manufacturer already has that option built right into their bags.

They provide a flap that drops down and you position it to cover any portion of the Velcro you wish.

Owen
 
Hi

Although I think rare earth magnets are cool, I would not put them near my photographic gear or a mechanical watch. The bag will hang of the shoulder at just the right height to magnetise anything on your wrist as it swings past. It will also magnetise parts of the camera if it gets close enough, which from the looks of it it will.

Berni
 
Hi

Although I think rare earth magnets are cool, I would not put them near my photographic gear or a mechanical watch. The bag will hang of the shoulder at just the right height to magnetise anything on your wrist as it swings past. It will also magnetise parts of the camera if it gets close enough, which from the looks of it it will.

Berni
 
It so happens, the metal plates did not hold to the magnets hard enough to feel secure, so, since the minimum purchase for the magnets I got online was 5$ (each magnet cost 56 cts) I ordered 10 of them, so my solution was to use magnets on both sides of the flap.

This is how it looks, and works perfectly. I just drop the flap, and it finds the way to snap perfectly every time. Pretty neat ;)



1ff651569dfc4d76a13c1d0b60411417.jpg



--
Martin Ocando
-------------------------
 
My Domke bag has side pockets where items such as extra batteries, spare SD cards etc can be placed.

Although your approach seems ingenious and more convenient than the velcro, wouldn't there be a risk of the magnets accidentally erasing all the images on a memory card, if it shifted around in the side pocket and ended up right under the magnet?

Just asking...
 
My Domke bag has side pockets where items such as extra batteries, spare SD cards etc can be placed.

Although your approach seems ingenious and more convenient than the velcro, wouldn't there be a risk of the magnets accidentally erasing all the images on a memory card, if it shifted around in the side pocket and ended up right under the magnet?

Just asking...
 
My Domke bag has side pockets where items such as extra batteries, spare SD cards etc can be placed.

Although your approach seems ingenious and more convenient than the velcro, wouldn't there be a risk of the magnets accidentally erasing all the images on a memory card, if it shifted around in the side pocket and ended up right under the magnet?

Just asking...
 

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