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Posted by DAVE on April 9, 2008, 7:38 am
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Hi, hope someone can help.
I've built a really nice workshop/garage (approx 30' x 16') into which I
have put a milling maching, lathe, welding gear and all my tools etc. The
walls are of single 4" concrete block, painted on the outside with sealant
and 3 coats of masonary paint and seems quite dry on the inside. The roof
is of 3/4" marine ply with 3 loads of felt.
I've sealed all around the doors and windows with mastic.
The trouble is that everything is going very rusty, very quickly, including
all new tools that are in boxes.
I'm already thinking of 4" fibreglass insulation in the roof and
plasterboarded over.
But the main problem (I think) is that there is no heat at all in the there
and is causing condensation. I have a couple of gas heaters but don't like
the idea of naked flames in the workshop when I'm not there.
I've heard of a small electric heater (like a tube?) that should be cheap to
run over night but can't remember the name.
The bed of the miller has gone quite rusty too despite covering in WD40 etc
..... is there an easy way of getting it back to normal? ie, very fine
wet'n'dry?
Any help would be appreciated.
Brad.
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Posted by Andrew Mawson on April 9, 2008, 8:01 am
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> Hi, hope someone can help.
> I've built a really nice workshop/garage (approx 30' x 16') into
which I
> have put a milling maching, lathe, welding gear and all my tools
etc. The
> walls are of single 4" concrete block, painted on the outside with
sealant
> and 3 coats of masonary paint and seems quite dry on the inside.
The roof
> is of 3/4" marine ply with 3 loads of felt.
> I've sealed all around the doors and windows with mastic.
> The trouble is that everything is going very rusty, very quickly,
including
> all new tools that are in boxes.
> I'm already thinking of 4" fibreglass insulation in the roof and
> plasterboarded over.
> But the main problem (I think) is that there is no heat at all in
the there
> and is causing condensation. I have a couple of gas heaters but
don't like
> the idea of naked flames in the workshop when I'm not there.
> I've heard of a small electric heater (like a tube?) that should be
cheap to
> run over night but can't remember the name.
> The bed of the miller has gone quite rusty too despite covering in
WD40 etc
> ..... is there an easy way of getting it back to normal? ie, very
fine
> wet'n'dry?
> Any help would be appreciated.
> Brad.
>
>
Brad / Dave,
Quite probably the gas heaters are your problem. They give off copious
quantities of water vapour while they heat the air and leave your
machines cold. When you turn them off, the air cools and the moisture
in the air condenses on the machines. Gas heaters are a BAD IDEA in
workshops unless they are of the room sealed variety that vent
directly outside.
Can I suggest that you mount a 60watt bulb in the base of each machine
and leave them on all the time you are not using the machine. This
keeps the machine a degree or so above the air temp thus stopping the
condensation.
AWEM
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Posted by Mark Rand on April 9, 2008, 8:38 am
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>Hi, hope someone can help.
>I've built a really nice workshop/garage (approx 30' x 16') into which I
>have put a milling maching, lathe, welding gear and all my tools etc. The
>walls are of single 4" concrete block, painted on the outside with sealant
>and 3 coats of masonary paint and seems quite dry on the inside. The roof
>is of 3/4" marine ply with 3 loads of felt.
>I've sealed all around the doors and windows with mastic.
>The trouble is that everything is going very rusty, very quickly, including
>all new tools that are in boxes.
>I'm already thinking of 4" fibreglass insulation in the roof and
>plasterboarded over.
>But the main problem (I think) is that there is no heat at all in the there
>and is causing condensation. I have a couple of gas heaters but don't like
>the idea of naked flames in the workshop when I'm not there.
>I've heard of a small electric heater (like a tube?) that should be cheap to
>run over night but can't remember the name.
>The bed of the miller has gone quite rusty too despite covering in WD40 etc
>..... is there an easy way of getting it back to normal? ie, very fine
>wet'n'dry?
>Any help would be appreciated.
>Brad.
>
Assuming that the shed is reasonably well sealed, get a dehumidifier and pipe
the drain pipe to the outside. Run the dehumidifier until the shed has dried
out. After that it should cycle on and off and cost less.
Are you parking cars in there as well? If so, the dehumidifier is vital. If
the building isn't well sealed then you will have issues at this time of year.
The dehumidifier will help, but it'll cost more to run.
Mark Rand
RTFM
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Posted by Steve on April 9, 2008, 9:03 am
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> wrote:
>
>>Hi, hope someone can help.
>>I've built a really nice workshop/garage (approx 30' x 16') into which I
>>have put a milling maching, lathe, welding gear and all my tools etc.
>>The
>>walls are of single 4" concrete block, painted on the outside with sealant
>>and 3 coats of masonary paint and seems quite dry on the inside. The roof
>>is of 3/4" marine ply with 3 loads of felt.
>>I've sealed all around the doors and windows with mastic.
>>The trouble is that everything is going very rusty, very quickly,
>>including
>>all new tools that are in boxes.
>>I'm already thinking of 4" fibreglass insulation in the roof and
>>plasterboarded over.
>>But the main problem (I think) is that there is no heat at all in the
>>there
>>and is causing condensation. I have a couple of gas heaters but don't
>>like
>>the idea of naked flames in the workshop when I'm not there.
>>I've heard of a small electric heater (like a tube?) that should be cheap
>>to
>>run over night but can't remember the name.
>>The bed of the miller has gone quite rusty too despite covering in WD40
>>etc
>>..... is there an easy way of getting it back to normal? ie, very fine
>>wet'n'dry?
>>Any help would be appreciated.
>>Brad.
>>
>
>
> Assuming that the shed is reasonably well sealed, get a dehumidifier and
> pipe
> the drain pipe to the outside. Run the dehumidifier until the shed has
> dried
> out. After that it should cycle on and off and cost less.
>
>
> Are you parking cars in there as well? If so, the dehumidifier is vital.
> If
> the building isn't well sealed then you will have issues at this time of
> year.
> The dehumidifier will help, but it'll cost more to run.
>
>
> Mark Rand
> RTFM
Problem I found was that the de-humidifier didn't work when most needed, ie
during the winter months. The absolute worse thing to do was to get the
shop nice and warm on a cold winters night, then power down and leave the
place for a week. 90% of my rust problem went away when I stopped heating
the workshop and put up with the cold. I will try Andrews' trick and see if
that solves the rest. Used to do that with the rabbit during cold spells,
never thought to use it on the machines!
Steve
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Posted by Youra on April 10, 2008, 3:51 am
Please log in for more thread options Hi.
That's exactly right with the ' normal ' refrigerating dehumidifiers -
efficiency drops like a stone at much below 15C or so.
I've bought myself a desiccant rotor dehumidifier - I was having
exactly the sort of problem described in the original post - rust
everywhere - and presto, the problem has gone :-) Remarkable
quantities of water coming out of the thing...
The desiccant rotor dehumidifiers cost a little more to run (they
include a heater as part of the mechanism) but you probably don't also
need a heater on anything but the coldest days... <shiver>
Youra.
>
> Problem I found was that the de-humidifier didn't work when most needed, =
=A0ie
> during the winter months. =A0 The absolute worse thing to do was to get th=
e
> shop nice and warm on a cold winters night, =A0then power down and leave t=
he
> place for a week. =A0 90% of my rust problem went away when I stopped heat=
ing
> the workshop and put up with the cold. =A0I will try Andrews' trick and se=
e if
> that solves the rest. =A0 Used to do that with the rabbit during cold spel=
ls,
> never thought to use it on the machines!
>
> Steve
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> I've built a really nice workshop/garage (approx 30' x 16') into