What Causes A Nail Gun To Double Fire

For the novice nailer, the difference between crash-land and sequential firing can spark confusion. Simply understanding these firing types can forestall purchasing errors—and serious accidents. (For tips on preventing nail gun mishaps, come across ten Tips for Air Tool Safety .) To shed some light on smash gun triggers, read on.

Bump and sequential nail gun triggers are available with the PowerMaster Plus

Distinguishing Blast Gun Triggers

Sequential firing and contact (or "bump firing") are determined by how the user operates the controls—the trigger and the condom tip on the nose. The safety tip is too called a "safety contact tip," "touch trip" or "piece of work contact element", depending on the manufacturer. As an example, see the "contact element" on the Paslode F350S PowerMaster Plus , below).

With sequential firing, you lot have to printing or activate the safety tip, and then pull the trigger to burn each nail. In contact firing, nails are released when both the trigger is pulled and the safety tip is pressed against a surface simultaneously. Only of class, there's more than to it than that.

There are actually four distinct boom gun trigger types recognized by OSHA (Occupational Safety and Health Administration). They are: Total Sequential, Single Sequential, Single Actuation, and Contact Firing*.

Also called a safety tip, the work contact element is pressed against the surface to fasten a nail

Full Sequential Firing

With full-sequential firing, the controls have to exist actuated in a series. First, t he safety tip has to be pressed, and then the trigger has to be pulled to release a single fastener. To drive another nail, you must release the smash gun trigger, elevator the tool, press the safety tip and pull the trigger once more. Slower than bump firing, full-sequential firing is considered the safest pick.

Likewise called unmarried-shot firing, full-sequential is platonic for applications such as framing and carpentry, where precision is more than important than fastening speed. An case can be seen with the full-sequential firing Fasco F70G Joist Hanger Nailer ,below. This particular nail gun is used for fastening metal plate connectors and hurricane ties, both of which have defined nail holes.

Sequential firing mode in nail gun triggers, as with the Fasco F70G, provides greater nailing precision

Contact or "Bump" Firing

Contact firing is commonly called "bump firing" because the user can chop-chop press or "bump" the rubber tip against a surface to continuously fire nails. The sequence of controls doesn't matter, and then long every bit both are actuated. You can fire nails very quickly with this type of trigger.

Bump firing is useful in large-scale projects that don't require precise fastener placement. While information technology's considered a more efficient firing pick, as more nails can be fired in a comparatively shorter amount of time, information technology'south also the least safe. Bump firing is ideally used on horizontal, flat surfaces, such every bit flooring, roofing, decking, and pallet making.

Some nail guns are sold with 2 triggers, typically with an orangish or black trigger for bump firing, and a silver or gray trigger for sequential. More frequently, manufacturers have been offering tool-free "selectable actuation" on nail guns to make them more versatile. With this feature, you just flip a switch to modify firing modes, every bit with thdue east Metabo HPT (formerly Hitachi) NR90AES1M framing nailer, shown beneath.

Single-Sequential Firing

Single-sequential firing is similar to full sequential in that the user even so has to actuate the controls in a series. In this case, though, you don't have to lift the tool, you lot can merely "drag" the nose forth the surface. To fire some other nail, you must pull and release the trigger. The upside of this trigger type is slightly greater speed than full-sequential, since you don't have the added move of lifting the tool each time.

Unmarried-Actuation Firing

Single-actuation firing is similar to bump firing, but only in shooting the first blast. It doesn't thing which club the controls are operated initially. To drive the post-obit nail, the user has to lift the tool and squeeze the nail gun trigger once again. According to OSHA, some manufacturers mistakenly label these triggers as "single sequential," which is technically wrong.

It'due south important to annotation but experienced nail gun users should select contact or crash-land firing modes. If you're worried nigh being considered a "newb" for choosing a sequential firing gun, don't. Even pros like Robert Robillard (the "Concord Carpenter"), recommend sequential fire over bump firing for safety reasons.

Comic book from NIOSH and CDC illustrates proper nail gun use and firing types and

Speaking of Safety

Many nail guns have a recoil, or pushback one time the smash is fired. When this happens, a contact firing nailer is more probable to "double burn," sending two fasteners out of the tool before the trigger is released. The danger, of course, is that the fastener ricochets or shoots elsewhere than the intended surface.

For a lite-hearted visual aid, NIOSH (National Found of Occupational Safety and Wellness) and the CDC (Centers for Disease Control) created a comic book, S traight Talk Nearly Blast-Gun Safet y . Check it out and, i north the meantime, happy (and safety) nailing!

*Information provided past OSHA, from" Nail Gun Safety, a Guide for Structure Contractors ."

Source: https://www.nailgundepot.com/blog/nail-gun-triggers-bump-and-sequential.html#:~:text=Many%20nail%20guns%20have%20a,elsewhere%20than%20the%20intended%20surface.

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