Has anyone tried these? http://www.spring-bolt.com
Looks interesting. Wonder how well they really work.
That's why I asked.
Makes ya wanna get back in the game to find out, doesn't it? :p:D
"Spring-Bolt (patent pending) replaces traditional handrail-bolts."
Key words: fasteners, tension coil spring, clamping pressure, steel pin
So, how do these fasteners work? To find out, I perused Spring-Bolt's website (www.spring-bolt.com), carefully watched their instructional videos, researched the pending patent (www.uspto.gov), and I spoke to the inventor (Roger Rock of Rock Lock Fastening Systems, Inc). Voila! They work something like this: Essentially, the mechanical energy required to provide clamping pressure is accomplished by reverse-threading two opposing tension coil springs, and the system's lateral strength is maintained by a concentrically placed tempered stainless steel pin. In other words, after the post or handrail receiving holes have been drilled, and the left and right handed springs have been screwed (anchored) into their respective holes, a metal pin (which helps to guide the springs) is inserted into one of the springs, the opposing spring (which is screwed inside of the other handrail) is then slid over the other end of the pin. After the ends of the two springs make contact, they are twisted together. Twisting, or reverse-threading, the springs causes a shorting of the combined initial spring length. After several more twist, the wooden handrail ends make contact, thereby fixing the system's operational length. A few more twist cause the springs to elongate, but tensile strength (resistance to elongation) tightly pull together the handrails, and thus provide the required clamping pressure. I know, reading the description was a bit stressful, and by now you are somewhat strained. But read it again, and then re-watch the videos.
Bruce we can all read, the question was has anyone tried them.
the reply reminds me of a certain someone
Since 2007, approximately one-hundred-seven other TOH readers have apparently viewed this thread, and likely everyone in the larger audience was not a certified carpenter. Hence, for the benefit of new viewers, the reply-in-question provides an immediate, comprehensive and convenient product description, and for others, it might support conceptualization and learning. Moreover, I encourage senior discussion members and journeymen craftsmen to obtain a Spring-Bolt, evaluate it, and post their expert opinion. Jack and others are still waiting. Bruce
I work for a company called CP Stairmasters in Halifax, Nova Scotia, Canada, which supplies and promotes Spring Bolt fasteners. We have used the product in commercial applications. I also have several stair installers / renovators who use it on a regular basis.
I'd be happy to answer any specific questions you might have about use of the product.
This is a great product that I use. My company builds stairs in South Florida Boca, Palm Beach, Jupiter Island , high end customers who don't want to see nail holes and plugs. You still want to use glue or epoxy with the Spring Bolt.
M & M Stairs
West Palm Beach, Fl
The inventor of this hardware is also the owner of Rock Woodworks in West Palm Beach, FL. They specialize in high end, custom stairs for very wealthy and some famous people. With that said he would have to ensure top quality & safety to his customers as they are used to receiving 'only the best'.
If you look at what kind of work Rock does, check out his business website http://www.rockwoodworks.com and look at some of the photos~gorgeous!
Go get 'em Roger!