I am after a largish quantity of Plumbers Mait type material probably
in the region of 20kgs. It needs to have the same sort of properties,
high density, sticky, stays plastic and doesn't dry out or flow too
Can you buy the stuff in bulk rather than the tubs?
What is Mait anyway? Has anyone an alternative or recipe for an
equivalent? Biggest I have seen is 1.5 kg tub, and, of course,
cheaper would be excellent!
Or perhaps know someone who needs a whole lot of white plastic tubs
marked Evostik . Flowerpots??
OK as a backing for a Air rifle pellet trap. Angled steel plates are
very noisy when the pellet strikes, I find wadding systems are messy
and can easily get shot out. A 1-2 cm layer of Mait will stop and
retain pellets with a dull thump, even a .22 at the legal power limit.
I have tested this successfully with a small quantity in a plastic
lunchbox and it is very effective. I would like to have this over the
backstop to catch fliers, as well as behind a target, so i need more
than 1 tub.
I have heard in the US that a product known as duct sealent is
commonly used for this purpose, but have not been able to source it
I am of course building this myself, so (just about) qualifies in
Further to the Plasticine idea, I want to cover a fair area so I will
need quite a bit...
I find a product from suppliers of GRP materials, I can get 10kg
delivered at 3.20 a kg. Have to try a sample of the cheap shop route
you suggest v this stuff. I see some very cheap kids plasticine on
the web from China. Perhaps I should order a bulk pack...
thanks again for the tip
On 8 Jan 2004 02:46:27 -0800, firstname.lastname@example.org (Eric Dockum)
Lol, that'll be when I had an air rifle not too long ago and while
setting it up the pellets went through the paper target, the cardboard
sheet, the polystyrene block, cardboard box, and ended up inside my
empty aluminium tool case after going through the side and the
internal padding. ;-)
I have seen metal plates fronte by a rubber(neoprene like) sheet hung
in front.good to prevent backscatter but very noisy.
Club uses a large pile of sand - quiet but large and a bit messy for
I have not tried loft insulation except in it's unrolled form, pellet
will penetrate a long way before stopping. Insulation over a plate
might work, to reduce the noise, however I find the problem with all
the absorbers, wadded paper etc is that they are bulky and get shot
out in a small area and can become messy. The putty approach is very
quiet and slim.
Will see if I can get hold of a bit of linseed putty for a test.
email@example.com (Eric Dockum) wrote in message
OK, I did a couple of trials. As the weather was poor it was indoors
with a co3 beretta fs92, using wadcutter pellets of a variety of
I had a 500g lump of modellers plasticine in bright yellow!, which is
shaped like a small brick. It seemed very solid and hard. I also had
some fresh Sealcrete builders general purpose putty. Shot at both
from point blank and about 8 yards in the garage. Temperature around
I was amazed at the penetration into the plasticine. I had been
thinking that a 1 cm layer would be sufficent to stop a pellet, but
this was not the case. It took about 4 cm to do so. Interestingly
the hole appeared to close up somewhat after the pellet had passed, so
there must be some sort of elasticrecovery going on. Considering the
thickness of the brick of plasticine I am sure no flat pellets from a
pistol would go all the way through, but I have not tested pointed
pellets, or used a 12 ft lb rifle. The plasticine performed much
worse than the Plumbers Mait, which would only need a 1 cm layer, and
the pellest were effectivly on the surface and could be picked off.
As I want to do the closer range pistol work as well as longer ranges,
I am not confident that the thickness required in plasticine to stop
a flat pellet at 8 yards is economic at all. also it would turn out
The putty was better. First comment was that although it was a lot
less dense than the plasticine, it was fresh and quite sticky. To
avoid a mess I made up an equivalent brick sive to the plasticine
wrapped in cling film. This was a lot better, stopping pellets in a
couple of cm, I think it is the stickyness that does it. I also had
fired directly into the tub of putty without the cling film with the
I will test further outside with the rifles, pointed pells, but at
present it seems the putty is better. A layer of cling film would
stop the surface drying, I will let a bit dry and see if it makes a
difference. Plumbers Mait seemed to be better again, with little real
penetration, but is more expensive.
so far it looks like the putty/mait for a silent trap, no backscatter
and it would also be weather resistant! Warm weather performance in
the summer might also be interesting.
roll on better weather.
The stuff you want is call "duct seal" generically, but it is found in the
electrical aisle at a hardware store, not the plumbers. Also may be found in
the Air Conditioning section. It is a grey, oil-based putty used to seal
electrical cable inlets on meter boxes from the weather. Also is formed into
a bead and laid between sheet metal seams on Air conditioning ducts, since
it stays pliable hot or cold.
It is sold in about 2 lb (or 1k) bricks and can be molded into your
backstop. I bought a whole case for US $20 and made two pellet traps out of
some old stereo speaker boxes found at a junk shop for $5 a pair.
Big Al in Birmingham AL
wrote in message news:<I know I have a
delete button on here but this is diy you know>...
Have you tried butyl putty? It's the stuff that double gaziers (used
to?) use. You can thicken ordinary putty with cement or any powder such
as talc or even sand. Why not just glue a layer of vinyl over the steel?
It would seem that sticky is more effective than density alone. How
about a mixture of lard and clay?
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG
I bought some "plumbers mait" from B&Q recently, I paid near nigh a fiver
for approximately a litre size tub - very good it is too.
If you can't get it from B&Q, then it would be worth trying Wickes or any
good plumb shop?
All the best,
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com ).
It might be that some of the Florists shops use a similar material. I
remember seeing it used in the base of some arrangements when I was a
kid. A kind of stiff modeling clay. I made a box about 8x10 inches,
just big enough to hold 10 1 lb bricks of Duct Seal in 2 layers of 5.
even a M48 won't penetrate. I am not sure it even penetrates the first
Another idea is to contact daycare of elementary schools and see if they
have any modeling clay that has dried up. Over time some clays loose
their oil and get stiff. Stiff modeling clay is just about exactly what
duct seal is. Offer them some new clay for their old...
I remember using some stuff in a silent pellet trap which was much firmer
than putty, plumber's mait, plasticine, modelling clay, or anything else
that's been suggested. I find these softer meterials unsattisfactory as you
have to keep remoulding it every time it becomes to riddled with holes, and
after a few hundred shots replace it as it has more lead than anything else
and doesn't mould well.
I have no idea what the stuff I used was, nor where it came from. It was
some 20 years ago. It was like very dark silvery grey modelling clay -
imagine plasticine after being in the freezer? It wasn't sticky and was very
tough work moulding it into the back of the baking tin. I used about a 3cm
depth, but much less would have worked.
The best thing about it was that whether I used my CO2 BB gun, or a 12ft-lb
rifle, or whether I used pointed, rounded, or flat pellets, the penetration
was only a couple of milimetres at most. They just splat and stuck on the
surface, pretty quietly. Eventually, after a few hundred pellets, they would
cake up and you could just bursh them off with hardly any effort.
It could well have been proper ballistic putty as, if I remember correctly,
the guy who gave me the pellet trap was a ballistics guy at some physics lab
who did forensics for the police. Unfortunately I lost contact with him over
15 years ago.
Wonder what it was...
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