Bostitch MCN150 Specs
Height: 10.5 inches
Length: 11.5 inches
Weight: 4.6 pounds
Driving power: 450 inch-pounds
Magazine capacity: 29 nails
Nail size: 1 1/2 inches by .131 to .148
We're a general contracting company that specializes in
earthquake retrofitting, so we install an incredible number of
framing anchors, angle clips, ties, and straps — often in
very tight confines. These connectors seem to harbor an endless
number of holes, all of which must be filled with nails to
achieve the manufacturer's listed capacity.
To avoid driving all those fasteners by hand, we use several
positive-placement nailers, some from Paslode and some from
Hitachi. They make it much easier to nail off hardware —
but when space gets tight, which it often does beneath the
house, we have to switch to palm nailers or, even worse, actual
hammers. Both tools slow work down considerably.
A Light Compact Gun
Then, last year, another option turned up: Bostitch's new
metal-connector nailer, the MCN150 Strapshot, which we tested
for JLC during the summer months.
We were immediately impressed by the tool's small size and
light weight. It's about two-thirds the size of our current
metal-connector nailers and, at 4.6 pounds, significantly
We tested the MCN150 by cycling it from van to van for several
months so that each carpenter in the company could get a chance
to use it. Our nail guns take a real beating, and we didn't go
easy on this one. We dragged it through dirt and cobwebs in
many different crawlspaces and used it to drive a lot of nails
— usually into old, dry wood that was very hard.
After all that abuse, pretty much everybody agreed that the
tool was comfortable to use and well-balanced. Aligning the
shot is easy because the nail that's about to be driven sticks
out of the end of the gun; all you have to do is put the tip of
the nail in the hole.
Perhaps best of all, the Strapshot — thanks to its small
size — made our use of palm nailers and hammers much less
Right Power for Short Nails
The reason the MCN150 can be so small and light is that it
drives only 11/2-inch nails — a job it does very well.
Our other positive-placement guns take the same type of
fasteners as the Bostitch but also accept 21/2-inch nails,
which is partly why those guns are bigger and heavier.
Although being restricted to driving shorter fasteners could be
a problem for some carpenters, it isn't one for us: Ninety-five
percent of the nails we use to fasten hardware are 11/2 inches
The Bostitch gun is significantly smaller than earlier
positive-placement tools from Paslode (top) and Hitachi
I've heard that Bostitch plans to introduce a second, more
powerful version of the gun this summer. It will be called the
MCN250 and is supposed to be able to drive both 11/2-inch and
The MCN150 takes the same type of fasteners driven by other
positive-placement tools — but only the 11/2-inch
A Short Magazine
The only downside to the MCN150's compact design is that the
magazine is short, too. Instead of holding the usual two strips
of nails (24 nails each), it holds just one. However, this
didn't bother us much, because even with full-size hardware
guns we often load only one strip of fasteners. We have
problems with jamming when we load more. Jamming is a common
headache for us, probably because of all the dirt that gets
into the magazines — an unavoidable predicament when you
work in low, dirt-floored crawlspaces.
Since the nail that's about to be driven hangs out of the
gun, aligning the shot is easy: You simply put the tip of the
nail into the hole in the hardware.
We were hoping that the MCN150 would be immune to this problem,
and at first it was, especially when we used Bostitch nails.
But eventually we experienced some of the same jamming that we
did with our other guns. Apparently the contact element was not
"detecting" the metal connector, so it would refuse to fire
— a built-in safety feature that worked as designed. When
this happens with our other hardware nailers, we can usually
fix it by quickly pulling back and releasing the pusher, a
method that works with the MCN150 as well.
Given how much cleaner a framing site is than a crawlspace, I
doubt any framer would have trouble with the Bostitch
Because it's so much lighter and easier to use in cramped
quarters than a full-size gun, the MCN150 would be a good fit
for any carpenter who needs a positive-placement tool and can
get by with one that drives only 11/2-inch nails.
It would not be a good choice for someone who drives a lot of
21/2-inch fasteners into hardware, obviously — but if you
drive only the occasional 21/2-inch nail, consider pairing this
gun with a palm nailer and using the palm nailer on those rare
occasions when you need to drive something long.
Jeff Bailey is operations manager and co-owner of Bay
Area Retrofit Inc., in Berkeley, Calif.
JacPac CO2 Portable Power
As a handyman and finish carpenter specializing in small
jobs, I struggle with a recurring dilemma: whether or not to
bring the compressor, hoses, and nail guns to simple jobs like
hanging a prehung door or installing a few pieces of trim. I
usually do decide to haul it all to the site, because the
additional hassle and setup is offset by improved quality and
Still, carrying and setting up the stuff is a pain. So when the
JacPac (Supplierpipeline, 800/567-0864,
www.supplierpipeline.com) came on the
market, it struck me as a great way to minimize the hassles of
using nail guns for small jobs.
The JacPac is a small aluminum bottle — with a rather
conventional-looking air regulator — that holds about 3
pounds of CO2. The manufacturer claims that you can use it in
place of a compressor as the air supply for just about any
pneumatic nailer. Since the whole setup is very small and
light, you can hang it off your belt and go right to
The prospect of carrying nothing but a little bottle to knock
out a small job was extremely appealing. That I could use the
product with my existing inventory of nail guns and fasteners
was the icing on the cake. I decided to give it a try.
Perhaps because the JacPac is such a new product, I was given a
bit of a run-around when I tried to order one, but ultimately I
received good service from Workshop Supply (519/475-4947). The
tool shipped fast, and the company included a few extras like a
notepad and a complimentary copy of Canadian Woodworker (the
JacPac is a Canadian product).
The JacPac kit contains a 10-ounce CO2 cylinder, a regulator, a
coil hose, and safety glasses. Everything is packed in a small
The regulator includes a plastic clip, so you can hang it from
your toolbelt. Although the clip is functional — it
easily grabbed my heavy-duty Occidental toolbelt — it
felt a little flimsy; I got the impression it might eventually
Before using the JacPac, you have to get the cylinder filled at
a paintball shop, a sports shop, or an industrial gas supplier
equipped to sell small quantities of CO2. I filled mine for $3
plus tax at a local hunting outfitter that sells paintball guns
and supplies. (If you live in a rural area, make sure there's a
local CO2 supplier before ordering a JacPac.)
With small guns, the little tank functions much the same as any
other air supply; it's hard to tell you're not on a compressor.
But with larger, air-guzzling guns — like roofing or
framing nailers — you may have to wait a few seconds
between shots to allow the tank to rebuild pressure. Also, when
the tank is discharged quickly — either because of rapid
firing or because the gun you're using demands a lot of air
— the tank gets extremely cold and frosts up dramatically
on the outside. I've seen the same phenomenon with some aerosol
products, but it's more severe with the JacPac.
Shooting small fasteners rapidly or using a framing,
siding, or roofing nailer can cause the tool's aluminum tank to
frost, slowing air delivery.
Before heading out into the field, I wanted to see just how
many fasteners I could shoot, so I tested all my commonly used
guns, using a fresh tank of gas for each trial. The results are
shown in the chart on page 136.
Admittedly, I was hoping to get more shots per tank than I did
— but it's hard to complain when, at about $120, the tool
is priced so reasonably.
Certainly its limited capacity makes the JacPac unsuitable for
production work. But for small jobs and punch-list-type work,
it can be very handy. And as the technology improves and the
industry catches on, it wouldn't surprise me if someday you
could get the CO2 tank filled at your local lumberyard, which
would make this product even more convenient.
One suggestion: When you're using the JacPac, add a hook to
your toolbelt for the gun. Otherwise you'll waste air
disconnecting and reconnecting it.
Aaron Telian is a carpenter for Telian and
Sons in Oakhurst, Calif.
Site Workby Patrick McCombe
mulch on a large building site to prevent erosion or to protect
grass seed can be a slow and mind-numbing process. If you rent
a straw-blower, though, you could have the whole site covered
in an hour or two. Finn's B70 can spread between 6 and 7 tons
of straw per hour, shooting it as far as 60 feet. The chute
rotates 360 degrees and provides 70 degrees of vertical travel.
Prices vary with location, but I'm told you can rent a B70 for
about $150 per day. A smaller machine, the B40, rents for about
$100 per day. Finn, 800/543-7166,
hope it doesn't take a call from a past client saying one of
his or her kids just stepped on a nail for you to see the value
of the Magna-Rake. This well-made magnetic pick-up tool sports
a flat side for cleaning smooth surfaces like asphalt and
concrete and a toothed side for sifting through dirt, grass,
and mulch. I found it on the Web for $30.
Do you often
find yourself dealing with boggy job-site conditions that
stymie rubber-tired equipment? If so, take a look at this cool
little loader from ASV. The SR-80's 20-inch tracks exert
slightly more than 3 psi of ground pressure, allowing it to
float over obstacles and wet conditions without getting stuck.
Powered by an 80-hp turbo diesel engine, it boasts a
3,100-pound operating capacity. Attachments include a power
auger, a grapple, a brush-cutter, pallet forks, and buckets and
blades. Prices start at $47,500. ASV,
powdered dye and hardener used with concrete can create quite a
mess — on your hands, your clothes, even your customer's
landscaping. That's why contractor Brian Bettencourt invented
the Color Spreader. The 18 1/4-inch aluminum-framed,
steel-meshed sifter lays down a 14-inch path of dye with every
pass, and does so with greater consistency than hand-spreading,
Bettencourt says. It attaches to standard screw-in or plug-in
poles and sells for $125. Innovative Tool
and cutting concrete and masonry can generate clouds of dust.
In addition to being messy, these airborne particles pose a
health hazard. The Dust Muzzle, available for most handheld
grinders, is a great solution. When connected to a "dustless"
vacuum, the plastic shroud can reduce airborne particles by 95
percent, the manufacturer says. The company makes similar
products for worm-drive and cutoff saws, die grinders, and
dual-action sanders. Prices start at around $28. Dust
Collection Products, 800/568-3949,
Slick Tube Form.
forms have always struck me as wasteful and overpriced, but
what's the alternative? Here's one: Straight-Sided and Tapered
Column Forms from Superchute. The reusable polyethylene forms
can be made to virtually any length and diameter. Aluminum
clasps and hex bolts join the edges, making the tubes easy to
strip and flatten for storage. Twelve-inch forms sell for about
$50 per foot; 24-inch forms for $110 per foot.