fire

Fire Tools. by Mark Leichliter

Once I decided the CinderCone required an ash door to clean out the fire basin, it was pretty self-evident that some tools to facilitate the process were in order. That, and my own set of tools was pretty homely and long in the tooth. I elected to run with the hexagon motif and stick with solid stainless for the material.

The Poker/Hook. Went with hexagonal rod for the shaft to really drive home the idea that Hexes Are Awesome.

The Poker/Hook. Went with hexagonal rod for the shaft to really drive home the idea that Hexes Are Awesome.

Shovel. 11 gauge stainless steel scoop with tab and slot construction.

Shovel. 11 gauge stainless steel scoop with tab and slot construction.

And… the tongs. Challenging design, but worth it.

And… the tongs. Challenging design, but worth it.

With the tools designed, I realized they needed a place to live — one that complimented the CinderCone but was capable of standing on its own, too.

A “garage” to store the tools. The Hive!

A “garage” to store the tools. The Hive!

CinderCone: First Burn. by Mark Leichliter

With the welding and sanding and bolting all finished up, it’s time to test this thing out. My dear friends Bruce and Cyndi volunteered their beautiful property on the lake for a test site, and, once a day with cooperative weather materialized, it was time.

What an amazing evening! Couldn’t have been happier with how the CinderCone performed — and the visual effect of the cut-out pattern when combined with the dancing flames was nothing short of spectacular. We stoked the flames MUCH more than required to have a nice fire in order to stress-test the design. Glad we did, as it revealed some structural shortcomings that would need to be addressed before offering these up for sale.

 

Metal may seem like a solid, stable material — one that you can rely on to hold its shape and remain true to itself under stress. In reality, it is subject to all kinds of movement when subjected to heat. These thermal stresses need to be countered to maintain the integrity of the object.

The aftermath of our stress test showed that the outer “shell” of the design handled these forces well — but the grill itself, directly in contact with the source of heat, needed some shoring up. Any welder can tell you that one only need curtail expansion and contraction throughout the heating cycle to minimize warping. The grill was allowed too much freedom in this design, and the forces went to work on it. I needed to do some redesigning, but thought I’d try to retrofit the V1.0 CinderCone before tackling V2.0.

Adding ribs that radiate outward from the center of the grill to add stiffness. Notice the bonus colors provided by the fire!

Adding ribs that radiate outward from the center of the grill to add stiffness. Notice the bonus colors provided by the fire!

The brackets not only attach the upper section to the fire basin, but they also serve to pin the edges of the grill in place. I fabricated longer brackets to spread this pinning action along the entire edge.

The brackets not only attach the upper section to the fire basin, but they also serve to pin the edges of the grill in place. I fabricated longer brackets to spread this pinning action along the entire edge.

A phalanx of new brackets ready to be installed. You’ll notice that there are only five; the side with the door doesn’t get one, and that proves to be problematic.

A phalanx of new brackets ready to be installed. You’ll notice that there are only five; the side with the door doesn’t get one, and that proves to be problematic.

After a second test fire, you can see just how much force gets applied to the grill, and why the design for the opening is not going to work.

After a second test fire, you can see just how much force gets applied to the grill, and why the design for the opening is not going to work.

So, although the overall design was a success, there are some structural details that need improving. Another sticking point was removal of the ash that accumulates beneath the grill. I’d thought that removing the top section and grill would be easy enough to access this area, but adding the longer brackets and their additional fasteners made that too big a hassle. This thing needs an ash clean-out door.

On to CinderCone Version 2!

CinderCone: A chimenea? by Mark Leichliter

So, I designed a chimenea. I’m calling it the “CinderCone.”

CinderCone chimenea with 2D dood

Why a chimenea?

(If your first question is, rather, "WHAT is a chimenea?" - Wikipedia is your friend!)

Have you seen 'em? Talk about homely! Their design is primarily driven by utility tempered by manufacturing cost - and even when some aesthetics are brought into play, like in the last example below, the result is awkward, clumsy, and, well - what the hell is that shiny brass cap doing on there? Yeesh.

I often look around at the objects we fill our lives with, and wonder if there isn't something better, something more designed and pleasing to the eye to be had. Given that our blind fealty to the baser tenets of capitalism has brought us to the brink of destroying the climate, it seems that finding not just prettier but more considered, hand-crafted items just might be a better way forward. I also really like the aesthetic and cultural experience of the small fire, it's power to enthrall us, bring us together, and transport us through time to a primal place of comfort and camaraderie as we huddle around its warmth. Add some computer-aided design and laser cutting to the mix, and you have a redolent, fiery nexus of the ancient and modern to help stave off the darkness with your friends and loved ones.

Plus, given that the corona virus torpedoed that screen project I spoke of in my last post, I was looking for something other than craft beer and mountain biking to keep me occupied.