DIY Silicone Heat Blanket
Moderators: Head Monkey, kelvin, bigKam, skidesmond, chrismp
can you elaborate further ... does 10 oC/ min fit with your understanding?
This is the sort of thing I'm starting to read ... http://books.google.co.uk/books?id=VkX5 ... le&f=false , which points towards a two stage ramp, pressurisation and then soak.
This is the sort of thing I'm starting to read ... http://books.google.co.uk/books?id=VkX5 ... le&f=false , which points towards a two stage ramp, pressurisation and then soak.
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- Posts: 15
- Joined: Fri Nov 05, 2010 1:57 am
I did it my self
Hello,
I did my own heat blanket. If you want to build one you need:
- silicone rubber plate 3 mm thick x 2000 mm x 450 mm 2 x piece
- silicone in tube (200 degree silicone) - 5 tubes
- cekas wire (I used 1 mm thick wire)
1) You have to spine the wire around another wire (5 mm thick steel wire). I used electric drill, so I could spin the wire in reasonable time.
2) When you are finished you have to grab in one side and pull in another. You want to, almost flet the wire.
3) Clean the blanket (Clean it with hot water) and put it on the table.
4) Template - I nailed the nails in to the table - 10 mm away - on each side - true the blanket - 30 nails in each side.
5) Then I put the wire around all the nails !!! But be care full, you have to measure how much resistant you get. I had to make 3 fields and then wire them parallel - I got 63 oms (that was to much), the I mad 3 pieces and I put them parallel and it was 63 / 3 = 21 oms, mine is 20,8 oms.
6) Put the silicone (in tube) on the wires and silicone plate - you have to put it enough / one to 2 tubes. Then make it even and check each wire that is not in another wire.
7) Wire all up - electricity
Put the silicone (in tube again)
9) Put the silicone rubber plate on everything !!! DON'T PUT NAILS OUT !!!!
10) Put the wood on the blanket - but it has to be between the nails and make pressure on it.
11) Leave it for 2 days
12) Put the nails out and silicone that part as well
13) Repeat the step 10 ! But in this case all the blanket.
NOV YOU HAVE IT !!!!
IT COST ME 130 € !!!!
I did my own heat blanket. If you want to build one you need:
- silicone rubber plate 3 mm thick x 2000 mm x 450 mm 2 x piece
- silicone in tube (200 degree silicone) - 5 tubes
- cekas wire (I used 1 mm thick wire)
1) You have to spine the wire around another wire (5 mm thick steel wire). I used electric drill, so I could spin the wire in reasonable time.
2) When you are finished you have to grab in one side and pull in another. You want to, almost flet the wire.
3) Clean the blanket (Clean it with hot water) and put it on the table.
4) Template - I nailed the nails in to the table - 10 mm away - on each side - true the blanket - 30 nails in each side.
5) Then I put the wire around all the nails !!! But be care full, you have to measure how much resistant you get. I had to make 3 fields and then wire them parallel - I got 63 oms (that was to much), the I mad 3 pieces and I put them parallel and it was 63 / 3 = 21 oms, mine is 20,8 oms.
6) Put the silicone (in tube) on the wires and silicone plate - you have to put it enough / one to 2 tubes. Then make it even and check each wire that is not in another wire.
7) Wire all up - electricity
Put the silicone (in tube again)
9) Put the silicone rubber plate on everything !!! DON'T PUT NAILS OUT !!!!
10) Put the wood on the blanket - but it has to be between the nails and make pressure on it.
11) Leave it for 2 days
12) Put the nails out and silicone that part as well
13) Repeat the step 10 ! But in this case all the blanket.
NOV YOU HAVE IT !!!!
IT COST ME 130 € !!!!
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
Re: I did it my self
i guess i understand but some pics would be sweetbrazgotine wrote:Hello,
I did my own heat blanket. If you want to build one you need:
- silicone rubber plate 3 mm thick x 2000 mm x 450 mm 2 x piece
- silicone in tube (200 degree silicone) - 5 tubes
- cekas wire (I used 1 mm thick wire)
1) You have to spine the wire around another wire (5 mm thick steel wire). I used electric drill, so I could spin the wire in reasonable time.
2) When you are finished you have to grab in one side and pull in another. You want to, almost flet the wire.
3) Clean the blanket (Clean it with hot water) and put it on the table.
4) Template - I nailed the nails in to the table - 10 mm away - on each side - true the blanket - 30 nails in each side.
5) Then I put the wire around all the nails !!! But be care full, you have to measure how much resistant you get. I had to make 3 fields and then wire them parallel - I got 63 oms (that was to much), the I mad 3 pieces and I put them parallel and it was 63 / 3 = 21 oms, mine is 20,8 oms.
6) Put the silicone (in tube) on the wires and silicone plate - you have to put it enough / one to 2 tubes. Then make it even and check each wire that is not in another wire.
7) Wire all up - electricity
Put the silicone (in tube again)
9) Put the silicone rubber plate on everything !!! DON'T PUT NAILS OUT !!!!
10) Put the wood on the blanket - but it has to be between the nails and make pressure on it.
11) Leave it for 2 days
12) Put the nails out and silicone that part as well
13) Repeat the step 10 ! But in this case all the blanket.
NOV YOU HAVE IT !!!!
IT COST ME 130 € !!!!
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
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- Posts: 15
- Joined: Fri Nov 05, 2010 1:57 am
Re: I did it my self
nice one! you could make it even cheaper by using just silicone resin and fiberglass mats.brazgotine wrote: 7) Wire all up - electricity
could you give some more info on your point seven? we're having some troubles with the wires producing too much heat around the lead wire connection.
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- Posts: 15
- Joined: Fri Nov 05, 2010 1:57 am
Heat
I have put my wires near end in TERMO rubber. I knew that here can be some problems.
And again - I didn't put cekas all around in one piece - I made 3 separate parts inside heat blanket and the wire them parallel.
Greetings !
P.S. Do you use AUTO TUNE in your PID ? If you - then mine oppinion is that you have smoked the cekas wire at the begining - to much power.
And again - I didn't put cekas all around in one piece - I made 3 separate parts inside heat blanket and the wire them parallel.
Greetings !
P.S. Do you use AUTO TUNE in your PID ? If you - then mine oppinion is that you have smoked the cekas wire at the begining - to much power.
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm
Re: Heat
well, all our silicone is heat resistant up to 450°C max.brazgotine wrote:I have put my wires near end in TERMO rubber. I knew that here can be some problems.
And again - I didn't put cekas all around in one piece - I made 3 separate parts inside heat blanket and the wire them parallel.
Greetings !
P.S. Do you use AUTO TUNE in your PID ? If you - then mine oppinion is that you have smoked the cekas wire at the begining - to much power.
same here, what are cekas? we are using four wires in parallel as well.
i just think the problem is that we just wound these wires around the lead wire in the same place which generates too much heat in that spot.
we don't use a PID. we have a dimmer and control the power manually.
Endre, can you say a bit more about why you do this? I'm assuming you're concerned about the internal moisture content of the wood you are using, but I still can't make sense of it : (80C or warmer is what i use for hardening solid blocks of wood for cores, for skis i use lower temperatures and then hardening in a heating cabinet
- MontuckyMadman
- Posts: 2395
- Joined: Fri Jun 20, 2008 9:41 pm