DIY Compact Portable Magnetic Laptop Shelf Build Instructions

Step 4

Add Anti-Slip Coating to Magnets

Page 1: Overview & Step 1: Drill Holes
Page 2: Step 2: Mount Brackets
Page 3: Step 3: Glue Magnets
Page 4: Step 4: Add Anti-Slip
Page 5: Options & Variations
Page 6: Photos of Shelf in Use (IUEC)
Page 7: Read More, FAQ, Recipient List

*Edit 2024; with new magnetic configuration I no longer wish to add friction.  I prefer a lower weight carrying capacity but the protection of the magnetic shelf sliding down if overloaded rather than detaching and falling.  I now spray paint and clear coat magnets as fully explained here: www.kevingittemeier.com/magnetic-folding-shelf-brackets/3/

Magnetic Folding Brackets
*Edit 2024; new methods

Recommended:
Dupli-Color Premium Automotive Paint:  https://amzn.to/3vFYPOU
Rust-Oleum Acrylic Enamel Gloss Clear:  https://amzn.to/48D7IHo

Optional:
Diamond Strength Nail Polish: https://amzn.to/3tXzz6a
Xtreme Wear Nail Polish: https://amzn.to/3Otlzs3


Electric tape, Plasti Dip or maybe even a paint or nail polish will work to add some friction or grip. The magnets are slick and will just slide down some metal surfaces when the shelf is loaded with anything reasonably heavy.

I want some level of impact buffer so the magnets don’t shatter over time due to the repeated impact of mounting. I also want to easily be able to wipe off metal debris should any get on the magnets.

Electric Tape (easiest & most effective)

Using 1.5″ wide electric tape is easier and faster than applying Plasti Dip and has just the right amount of friction. It adds a level of friction but will still slide down if overloaded rather than detach and fall. I would much rather the shelf just slide down than fall off.

Laptop_Shelf_Magnets
Magnets covered with Electric Tape

On some of the boards with 6 top magnets, I added two layers of tape to add a little more impact cushion and make the magnetic attraction a little weaker. Every little bit of space between the magnets and metal surface weakens the attraction. Remember 6 top magnets is pretty strong and was hard to remove before I learned a trick (video).

Applying Plasti Dip is more time consuming and it offers too much friction. The shelf is less likely to slide down when overloaded and will detach and fall.

Magnetic_Laptop_Shelf_Build
Spraying Plasti Dip on magnets

I scuffed the surface of the magnets with sandpaper before applying the Plasti Dip. The Plasti Dip works but is not ideal because it will eventually wear and peel off and will have to be reapplied.
*Edit 2024; now I completely sand all paint off the back of the bracket as seen here

Magnetic_Laptop_Shelf_Build
Spraying Plasti Dip on magnets


We don’t really need a rubber coating, it just needs to be something less slick than the magnets and offer some level of friction.

The electric tape is not perfect and can wrinkle if you try to adjust the shelf once mounted (Fabian!) but at least it’s easy to replace.

I think there is probably a better paint option out there and would like to hear some alternative ideas from viewers.

Edit 2020_10, I used Rust-Oleum metal paint and it works well enough but does chip and peel off with use and will need reapplication. I am sure there is probably a better coating for this application but until I find one, electric tape is the easiest and most effective option I have tried.

*Edit 2024;  I have had very good results with auto spray paint followed by several high gloss clear coats and clear coat only. See dedicated web post on Magnetic Brackets for full details.

Magnetic Folding Shelf Brackets

I have used nail polish and nail polish followed by several clear coats with good results but I prefer just spraying auto paint. See more details on dedicated post:
www.kevingittemeier.com/magnetic-folding-shelf-brackets/3/

Material Kit

Plano ProLatch 23650-52 Stowaway Organizer with various Bolts, Magnets & 1.5″ wide Electric Tap. Notice the blue door blocker magnets. Those have saved my a$$ on many an occasion and I carry at least 2 in my pocket. More on those Here.

DIY_Laptop_Shelf_Material
Laptop Shelf Material

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Next Page for Options & Variations

Edit 2024; Dedicated web post on new Magnetic Bracket config


Page 1: Overview & Step 1: Drill Holes
Page 2: Step 2: Mount Brackets
Page 3: Step 3: Glue Magnets
Page 4: Step 4: Add Anti-Slip
Page 5: Options & Variations
Page 6: Photos of Shelf in Use (IUEC)
Page 7: Read More, FAQ, Recipient List

Pages: 1 2 3 4 5 6 7

21 Comments

  1. Alex on January 4, 2021 at 7:43 pm

    Hey Kevin, how is version 3 coming along? I can’t imagine what your plans are for making it “thinner, lighter and more compact.” I’ve been a lurker for a while as I was going to make my own invention just as you have done, but you have done a ton of the trial and error as well research into making your shelf.

    I came up with the same idea a year ago when I saw a shelf like it mounted with screws in a PLC console and I told the tech I was working with that it would be awesome to mount one of those with strong magnets and have it moveable around all of our different work areas and sites… they just shrugged and I stayed busy with work as I was the FNG. Finally with a little more down time and days of research several months ago, I saw that you had the same drive as I for a product/project like the one you have created. Anyhow, great work thus far on your personal project, I hope to order the materials soon so that I can have a couple of shelves lying around in my laptop bags/work truck.

    • Kevin Gittemeier on January 4, 2021 at 8:13 pm

      Thanks,
      Version 3 won’t start for a while as I have other projects to complete first.
      Version 1 took me nearly 20 years to complete when I found the half started project while cleaning my basement and finally finished it. Version 2 had been in my head for years but took that long to find the proper hinges.

      The key to Version 2 is the low profile hinges and the magnet configuration. I will explain the science behind the magnet config in a future update but its important to do the magnets exactly as I have, alternating the poles.

      I have one model that uses 1/32″ thick magnets and holds very strong. Yes 1/32″ paper thin magnets. The key is the alternating poles.

      I will update this post in the future with more info but time is very limited and I make little to no money off these posts (1-3% off amazon links) so its hard to justify the time.

      Good luck and remember you can help support this website and YouTube channel by Subscribing, hitting Like & Commenting on videos.
      Help us get to 100k Youtube Subscribers: http://goo.gl/DDfVab

      Latest YouTube video: https://youtu.be/HyrhW_gnQEM

      • Chris on August 28, 2022 at 1:30 pm

        Kevin thank you so much……it works great it’s perfect for relay testing on switch gear.

        I changed it a bit and used clear acrylic instead …it’s better for me

        Thank you
        Chris

        • Kevin Gittemeier on September 4, 2022 at 4:39 pm

          That’s awesome! If you like email some photos and I will post them on a dedicated section to display peoples variations.
          Did you use acrylic or Lexan? I have found in my experience Lexan is easy to cut and drill than acrylic. For example I used Lexan on this panel mount build https://youtu.be/a826q0I0a_Y buy used acrylic on a previous build https://youtu.be/YOzw9btb–k

  2. Mohsen on March 14, 2021 at 1:44 am

    Hello Kevin,
    Fantastic Idea and thanks for sharing with everyone. My question is about the magnet. Does the magnet can damage hard hard drive or any other parts on the laptop? How strong the magnet should be to effect and damage the hard drive?

    Thanks,

    • Kevin Gittemeier on March 14, 2021 at 11:51 am

      Thanks, and good question.
      Anything is possible but practically, no. Remember powerful magnets are in hard drives but fields are shunted. Just don’t store the laptop shelf magnet side touching the laptop (likely would still be fine but just to be on safe side). Store it cutting board side towards laptop. I will make an edit fully explaining the magnetic shielding, concerns etc later today but it’s important to use the magnets I specify and alternate poles.

      I’ll post my edit as a reply here as well.

  3. Kevin on February 15, 2022 at 11:33 pm

    Dude. Can I please just buy a version two from you ? Email me please. Kevdok13@gmail.com

    I do fire alarm programming a lot and am always struggling with my tablet. This is amazing but I want it to be top quality and you seem to have all the small bugs worked out beautifully. If so let me know

    • Kevin Gittemeier on February 19, 2022 at 11:32 am

      Sure for enough money but once you add my price + shipping cost you may just want to build your own for around $50 in material.

      I would be willing to sell some of the versions I already have built for $150 + shipping. I have no idea what shipping would cost but if you are interested I will find out. The remaining models are listed on page 6 towards the bottom: https://www.kevingittemeier.com/magnetic-shelf-v2/6/

      I understand the struggle! Having a portable shelf can be a life saver.

  4. Mohamad on June 14, 2022 at 6:22 pm

    Hey Kevin,

    Have you ever tried this with a wooden board? I don’t see any draw backs.

    • Kevin Gittemeier on June 14, 2022 at 7:58 pm

      I have not.
      I like to use these cutting boards because they are light weight, inexpensive, durable, readily available and most of all suite the task perfectly.
      A wooden board would look very nice and work well but not ideal for a hard use application in the field like I use mine. I have thought about making a nice wooden one just as an example though and posting video and pics.
      Keep a lookout on my YouTube channel: https://www.youtube.com/user/KGittemeier

  5. Aaron on June 23, 2022 at 9:49 pm

    Do you have another source for hinges that you like? As I type this, Amazon only has one of the 8″ brackets of the type you recommend in stock.

    Or even an alternate hinge?

    • Kevin Gittemeier on June 23, 2022 at 10:17 pm

      I have no acceptable alternate (I have tried many) and I have not been able to find that hinge anywhere else. Keep in mind that they are sold in pairs so that “1” in stock will allow you to make a shelf. They come in and out of stock often so keep checking if you want more.

      When I see them in stock I buy several bc more and more co-workers keep wanting to buy shelves from me rather than build it.

      Also note that I just added a page 7 with more info. More pics and info coming soon about “Pro Version”.

  6. Marcus dondlexenuf on July 2, 2022 at 4:23 pm

    What kind of glue do you use? Also if that was a little wider I could clean a fish on it

    • KTFG_ on July 4, 2022 at 4:48 pm

      Elmer’s Glue, and it’s plenty big enough to clean your gold fish crackers.

  7. Jeff Janowiak on March 5, 2023 at 9:21 pm

    Thank you for this DIY, the details are awesome. I plan to make my own, only bigger. I have a 17″ laptop that is 16″ wide. I also have a laptop top tray that I use when sitting in a chair or bed at home. So, I plan to buy a cutting board that is 24″ by 14″ by 1/2′ thick. My question is, how thick are the boards that you use? I need to know the thickness of your board in comparison to the bolts you use so I can size bolts for my application. How far do your bolts stick out from the bottom of your board? (thickness of board + how far the bolts stick out should = the total length of bolt needed).

    Also, in your opinion, do you think a 14″ board (front to back) would be OK with the hinges and amount of magnets you use? Or, do you think there may be an issue with magnetic attraction to the surface due to the additional leverage from the longer board?

    • Kevin Gittemeier on March 17, 2023 at 4:58 pm

      The Mainstay/Dexas boards I use are about 1/4” thick with 3/8” edges because they have a recessed top so a lip around the edges. With this board, 12mm screws recessed works well. You will need it to be about 3/16″ passed the board to pass through folding hinge and thread the nut but too long interferes with hinge closure. Be sure to account for recess if you plan to recess your screws.

      A 24” x 14” by 1/2” thick is a big heavy board. I would try to make do with something a little smaller. I have seen the plastic cutting boards like mine, bigger than my dimension but still about same thickness and light weight. I believe the linked bracket will work will a smaller lighter board.

      For your board you will likely need a larger bracket (larger B measurement in diagram on link) The magnets are plenty strong enough but the leverage will be the issue. At one time they sold a lager hinge on the same link but I don’t think the B measurement was any longer, only the A measurement.

      Good luck and let me know how it goes.

      • Isaac Iniguez on January 11, 2024 at 3:34 pm

        Super excited to get started on this project of yours myself! Just purchased all materials. I’m going with the Farberware 11” x 14” board. Your instructions above recommend to go with the 8mm M4 bolts. However while comparing the length of the bolts with the thickness of the board (just over 1/4” thick) I won’t appear to have enough bolt left over to thread the nut. Perhaps the thickness of the Farberware has changed.
        After reading the most recent comment above, I should use a 12mm M4 bolt with a 1/4” board, correct? Or am I not recessing the bolt in far enough?

        • Kevin Gittemeier on January 13, 2024 at 2:47 pm

          Yes 8mm. My measurements account for using flathead countersink screws and countersinking the hole. The depth of countersink must be precise though because too much tread on the other side (the nut side) will result in the folding hinge not closing properly (see pic page 2). Ideally the bolt end will be flush with the nut with no protrusion or even a little recessed. Locktite on screw or dab of glue on screw nut once secured, don’t overtighten.

          I recommend countersinking a little shallow first then checking. You want the heads flat with surface and not protruding but they can can be recessed a little (below surface) without issue.

          I also recommend just buying 8, 10 & 12mm lengths. They are not very much money, you’ll be sure to have what you need and may use them for other projects as well.

          I do my magnets different now and just completely cover the entire bracket with 3 rows of 20 1/4″x1/4″x1/32″ thick magnets. I’ll try to put a pick and notes on the site this weekend.

          Here is a video with one done with this magnet configuration and spray painted:
          https://youtu.be/KE2LjRiIgmk?si=CaGfWp5UsEvuFkRV&t=210

          Good luck and let me know how it turns out.

  8. Mark Rose on January 24, 2024 at 12:13 pm

    Why not just buy this side shelf for toolboxes from harbor freight and put the magnets on it?
    https://www.harborfreight.com/side-tray-for-5-drawer-mechanics-cart-and-6-drawer-full-bank-cart-yellow-59447.html

    • Kevin Gittemeier on January 24, 2024 at 9:55 pm

      I own that folding shelf and while it’s great for what it is, it’s too big and heavy to be a portable laptop shelf (for me). It won’t fit in a laptop bag or tool backpack. It’s bigger than it may seem from photos.

      I’ll post a video of it in my Conex storage container web post.

      Thanks for the suggestion though.

      I have long searched for something similar but smaller but I have yet to find anything adequate.

  9. Kevin Gittemeier on February 11, 2024 at 1:24 am

    2024; In 2021 I started experimenting with 1/8” x 1/8” x 1/32” and 1/4” x 1/4” x 1/32” super thin magnets which I find to be far better for my portable magnetic shelves than the 1/2” x 1/16” magnets. I now recommend the 1/4” x 1/4” x 1/32 for best compromise of functionality, ease of build and cost (1/8” is better but harder to build and more costly). I also use new magnet coating, see dedicated post here https://www.kevingittemeier.com/magnetic-folding-shelf-brackets/

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