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Guest Post: Creating pick and pluck inserts for radio cases

May 19, 2021 Thomas Witherspoon Leave a comment

Many thanks to Mark Hirst, who shares the following guest post:

Pick and Pluck Foam

The old adage of ‘measure twice and cut once’ is very apt when using pick and pluck foam. The inserts are not cheap and mistakes are hard to rectify.

Whether you are preparing a large case with several items in a shared insert, or focussing around a single item, planning the layout is key.

Item weight is also a factor to consider, as this will affect decisions on wall thickness between items and the case.

Finally, how hostile is the environment likely to be? Is the case going in your backpack or car where you’re in careful control, or is going to be subject to careless handling by others?

Planning the layout

Once you’ve settled on a case size and how much padding you need, a non-destructive way of planning the layout is to use cocktail sticks.

These can be inserted into the corners of the foam segments to trace the outline of the radio and any items such as controls and ports that may extend from the body.

Since the size of the segments is in fixed increments, matching the exact dimensions of the radio is down to pure luck. I would go for a slight squeeze on the radio body if feasible to make sure it’s always in contact with the foam, but give some breathing room around the controls and ports.

The example below is a case I use for backpack transport. It has rather thin but adequate side walls for that purpose. I prioritised wall thickness facing the front and back of the radio, and also on the side opposite the carry handle. Note how the foam comes right up against the body of the radio, but leaves the front controls with some clearance.

This has the benefit of keeping any sudden shocks away from the controls, and also reduces the number of places where foam is subject to tearing and compression when the radio is inserted and removed.

Separating the foam

The best place to start is along the planned route of a long side wall. Use your thumbs to separate the surface of two segments on one side from two segments on the other.

Once the surface tear has got going, you should be able push a finger down between the four segments, extending the tear till it reaches the bottom of the foam. At this point, you have a cut all the way through.

Now you can peel the foam apart at the upper surface in each direction, using your forefinger to again push down between the segments to complete the separation down to the lower surface.

Work carefully around the cutouts and protrusions accommodating the controls. The protrusions are potential weak points at this stage, so be sure to proceed slowly.

If you need to practice, you can always start by separating segments deep within the section that will be removed till you get the hang of it.

Reinforcement

While pick and pluck means you don’t need special tools or templates to cut the foam, the remaining material in your insert is inherently weaker than a solid structure.

The solution I’ve used is to fill the residual cuts with a solvent free adhesive. Solvent free adhesives are often aimed at children for safety reasons, and while there are solvent based adhesives for foam, the one I used dries clear with a resilient flexible bond that is stronger than the foam itself.

I run a finger gently along the exposed walls, edges, and around the protrusions. This makes the potential weak points and stress areas immediately apparent as segments naturally separate along the pick and pluck cuts.

Armed with a tube of adhesive and a finger (usually a thumb), you can gently open the weak point and then run the nozzle of the tube down the cut, dispensing generous amounts of adhesive as you go. The two sections of foam close up as the nozzle passes by, with the adhesive soaking into both sides. As long as you don’t go overboard, the adhesive will stay within the join and you won’t have to wipe away any excess.

Side walls are not subject to the same stress as protrusions, but you will probably still spot sections with deeper cuts that need attention, and you will definitely want to reinforce the corners.

I’ve allowed at least a day to be sure the adhesive has set. It’s worth going over the insert again to see if you missed anything the first time round.

The Adhesive

The Bostik solvent free adhesive resembles runny white toothpaste when dispensed from the tube, but dries clear when set.

Inevitably, when I tried to find more of it recently, I discovered that the easily recognisable colour and branding had made way to a confusingly generic scheme shared across a variety of different adhesive types from the manufacturer.

I found this old listing for Bostik 80518 on Amazon UK, and another here on Amazon US. Based on the product number, a modern equivalent seems to be here.

I’m sure there’s nothing unique about this particular product, other than I’ve found it to be foam friendly over the years. Aside from being solvent free, its ability to seep into the foam is a key asset.

Since the first step of creating an insert leaves you with a potentially discardable piece of foam anyway, you have plenty of raw material to experiment with if in doubt.

Additional Reinforcement

Even if you have been generous with the side walls of your foam insert, a heavy radio might demand some additional work to ensure the longevity of the foam.

While the example case shown above worked OK to start with, I noticed that the floor of the case and the side wall facing the back of the radio were taking a beating.

The problem was caused by the feet of the radio, cooling fins, power and antenna connectors. During transport, these were pushing into the foam with the full weight of the radio behind them. Subject to such concentrated point forces, I could see that the foam wasn’t going to last.

Using very thin and very cheap flexible plastic cutting boards from my local food market, I cut out panels which spread the point compression across a much wider area.

Now when I put the case into a backpack, I ensure that the radio is sitting on its tail with the cooling fins against the rear panel.

Conclusion

While it’s possible to create ad-hoc transport solutions for radios, there’s nothing quite as satisfying as a sturdy padded case that is made to measure. The cases are forever, but the foam needs care and attention, so I hope these tips help you build a lasting solution for safely transporting your pride and joy.

Oh wow! Thank you so much for this timely post and for helping me as I kit-out a Pelican case for my Icom IC-705.

Readers, click here to check out Mark’s previous post about the case he uses for his Yaesu FT-891.

Thanks again for sharing your best practices, Mark!

Grab And Go, News, Portable, QRP

The Icom IC-705 is getting a rugged, weatherproof case

May 14, 2021 Thomas Witherspoon 25 Comments

I love my Icom IC-705–just check out my review if you need proof–and I love taking it to the field.

It’s a very compact radio for being so incredibly feature-rich and I love the portability simply using the attached battery pack. Since I operate mostly 5 watts with all my rigs, I rarely bother bringing an extra battery with it in the field.

With that said, I worry about the IC-705 more than any other portable radio I take to the field.

For one thing, it’s a $1,300 US rig. That’s not chump change for most of us.

The IC-705 also has a large color touch screen display. In fact, it’s the only field portable radio I own with a touch screen display. The touch screen has a matte finish and is pressure-sensitive rather than capacitive like most tablets and smart phones. Many capacitive screens use something like Corning Gorilla Glass which is actually quite durable and resistant to scratching and puncturing. It’s not perfect by any means (I think we’ve all shattered or broken a capacitive screen) but they’re more durable than the pressure-sensitive screen on the IC-705.

The IC-705 chassis feels very solid and it seems to be sealed very well, but at the end of the day, the chassis is make of a durable plastic material which is prone to scratching and I have to assume easier to damage than, say, the FT-817ND’s metal chassis.

Ray Novak with Icom America is a friend and when I took delivery of the IC-705 I mentioned how I felt protective of it in the field, fearing I might damage it in my backpack or even tumbling off a rock during a SOTA activation. Ray basically said that, as with everything new, I’ll get used to it and become more comfortable in the field.

I’ve never completely gotten there, though, and I’ve had this radio for a good nine months now.

I’m a backpack guy, so when the IC-705 is packed for field action in one of my Red Oxx or GoRuck backpacks, I house the IC-705 in a $14 Ape Case Camera insert. It’s not perfect, but fits it well.

I mentioned in my review that I eventually wanted to find a better solution.

I’ve looked at a number of 3rd party “cages” and numerous readers and YouTube channel viewers have recommended the IC-705 Carry Cage by Peovi. From what I’ve seen, it looks to be the best of the bunch, but it doesn’t do a lot to protect the lower back portion of the radio–the part of the chassis that meets a surface. I feel like it’s not quite what I’d want, thus hard to justify $135 for it (Peovi, send me a loaner to try out if you wish to prove me wrong.)

Other aluminum and 3D printed cages seem to add too much bulk to the radio or obstruct some of the most common connection points on the sides (antenna, key, ATU control cable, speaker/mic, etc.).

The form factor of the IC-705 is otherwise fine, but its chassis design does make it a little more difficult to protect than, say the KX3 or FT-817/818.

I’ve come to the conclusion that most of the time I use the IC-705, it’s on POTA activations where it’s sitting on a picnic table. Although I’m a backpack guy, this is the perfect time to kit out a ruggedized, weatherproof case.

Which case?

I started looking at cases last week and, being transparent, I’m a bit of a snob about these things. I want a case that’s made by a reputable company to protect the ‘705–I’m not going to hunt for one at a Walmart or Canadian Tire.

I’ve owned a few Pelican cases over the years. All have been smaller ones like the Pelican 1060 I’ve used with my KX1s. Pelican has a solid reputation and are certainly the best-known in this market and Pelican still makes all of their cases in the USA.

I’ve also been looking for a reason to try the case manufacturer, Nanuk. They design and manufacture all of their products in Canada and have a great reputation. Their pricing is the same or, at times, even slightly more competitive than Pelican for comparable cases.

Although I rarely care about the color, I decided I wanted a light grey or silver color for this case as opposed to black (my standard default), yellow, or another bright color.

In the Nanuk case line, their Nanuk 915 was probably the correct size to give the IC-705 enough padding, and allow space for all other accessories and items I’d need in the field.

In the Pelican line, I liked the Pelican 1400.

I was just about to pull trigger on the Nanuk 915 via the Nanuk website and decided it would make sense to also check pricing on Amazon.com for both units.

The Nanuk 915 was about $76 (affiliate link) with the pick foam insert–a great price–but only that price in the black color. The silver color was about $97.

I then checked the Pelican 1400. The black case with foam insert was $95, but the silver one was $79.95. Since I really wanted silver and since I had a slight preference for the 1400’s dimensions, I purchased the Silver Pelican 1400 (again, affiliate link).

Amazon offers free no-hassle returns, so once I receive the 1400 next week, I’ll carefully measure and double check everything before digging into the pick foam!

A case for advice…

I’ve never kitted out a larger Pelican case with radio gear. I would welcome any and all advise from those of you who have. Since it’s easy to remove pick foam, but impossible to put it back if done incorrectly, I really want to follow best practices. Please comment!