Blanket Warmer Build-up Questions

  • Some of the links on this forum allow SMF, at no cost to you, to earn a small commission when you click through and make a purchase. Let me know if you have any questions about this.
SMF is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

big archery nut

Fire Starter
Original poster
Feb 3, 2013
32
10
Stoughton, Wi
First of all I would like to welcome myself to the SMF. Excited to explore the many areas on here.

I'm not new to smoking but when I first started I did not have the luxury of all the forums now days to answer the many questions I had. I started my smoking by using a 55 upright drum. Worked great and had many modification over the years. I have been out of smoking for a few years and just recently came across a hospital blanket warmer for my next project. It's a smaller unit and measures 30"Tx28"Wx16"D inside. Now the conversion begins. I've stripped it down and removed the 350 watt element from it due to being undersized. In my 55 gal drum I used a 500 watt hot plate element for heating the cast iron pan for the chips. I added a oven broiler element for extra heat. Worked great but lacked insulation for cold weather smoking. I'm excited to see major improvement in the insulated blanket warmer.

Here are some of my questions as of now

.

1. I have calculated the Sq. inches and from some of the electric units I have estimated I will need about a 750 watt element to have enough heat to get up to at least 250 degrees. Keep in mind I do 16-20 lb. turkeys. Do you feel this will be enough? I will still be using the hot plate element along with the new 750 watt element. I plan on using a dual stage temperature controller. I may also use a device like the A-Maze-N-Pellet smoke generator so the 500 watt element may not be used during that smoking time.

2. Venting - My barrel had enough openings so I didn't need additional venting. (I used a weber grill cover for the top on the barrel). The blanket warmer being a completely sealed unit will need vents. What do you feel I need size wise for the top and bottom.

3. I have read a few posts that the top vent be placed in the back of the top so you can use the top as a work surface and also avoid moisture from dripping down the top vent and on  to the meat.  Any feelings on this?

4. I would like to seal the inside where the double wall is to keep moisture and smoke from entering the insulation. Any problems using high temp silicon caulk inside the smoker? 

That's all for now. If you have any other pointers before I start the project please let me know.

Thanks for your help.

Happy Smoking.
 
First of all I would like to welcome myself to the SMF. Excited to explore the many areas on here.

I'm not new to smoking but when I first started I did not have the luxury of all the forums now days to answer the many questions I had. I started my smoking by using a 55 upright drum. Worked great and had many modification over the years. I have been out of smoking for a few years and just recently came across a hospital blanket warmer for my next project. It's a smaller unit and measures 30"Tx28"Wx16"D inside. Now the conversion begins. I've stripped it down and removed the 350 watt element from it due to being undersized. In my 55 gal drum I used a 500 watt hot plate element for heating the cast iron pan for the chips. I added a oven broiler element for extra heat. Worked great but lacked insulation for cold weather smoking. I'm excited to see major improvement in the insulated blanket warmer.

Skip the cast iron and get the AMNPS... 

Here are some of my questions as of now

.

1. I have calculated the Sq. inches and from some of the electric units I have estimated I will need about a 750 watt element to have enough heat to get up to at least 250 degrees. Keep in mind I do 16-20 lb. turkeys. Do you feel this will be enough? I will still be using the hot plate element along with the new 750 watt element. I plan on using a dual stage temperature controller. I may also use a device like the A-Maze-N-Pellet smoke generator so the 500 watt element may not be used during that smoking time.

Heat... You have covered the bases.... trial and error will firm up a solution....

2. Venting - My barrel had enough openings so I didn't need additional venting. (I used a weber grill cover for the top on the barrel). The blanket warmer being a completely sealed unit will need vents. What do you feel I need size wise for the top and bottom.

Top.. 2 each 1 1/4" holes sealed with a smear of high temp silicone...  

Bottom..... 2 each 1" holes sealed the same... 

Holes on the sides.... low near the bottom and high near the top.....

3. I have read a few posts that the top vent be placed in the back of the top so you can use the top as a work surface and also avoid moisture from dripping down the top vent and on  to the meat.  Any feelings on this?

Opposite sides for inlets and outlets... good balance for heat and smoke.... 

4. I would like to seal the inside where the double wall is to keep moisture and smoke from entering the insulation. Any problems using high temp silicon caulk inside the smoker? 

Nope.....

That's all for now. If you have any other pointers before I start the project please let me know.

Thanks for your help.

Happy Smoking.
Bill, evening... and welcome to the forum.....  You have a lot of questions...  Could you post a picture of the warmer ??

Dave
 
Dave,

Thanks for the feed back. Here are my responses and follow-up questions. I will try to post some pictures soon.

First I plan on using the AMNPS. Couldn't remember what it was called. I'm making my own. One thing about me is that I will build anything before buying it. I have access to the same material. Wish they had those years ago. Wouldn't had to make as many trips adding chips. This will change my heat sources but I have different options at least.

Now for the venting. You posted this:

Top.. 2 each 1 1/4" holes sealed with a smear of high temp silicone...

Are you talking like a piece of 1-1/4 pipe through the top sealed? Keep in mind the cabinet is double wall stainless steel with insulation between. If these are towards the back of the top do I put the 2, 1" holes in the front edge of the bottom? Cross flow ventilation?

Bottom..... 2 each 1" holes sealed the same...

The same here. 1" pipe through sealed?

 

Holes on the sides....low near bottom high near top

The same here. 1" pipe through sealed? Do you mean 2 on each side at the bottom and 2 on each side of the top or 1on the bottom and 1 opposite side top?

Do any of these vents need closeable covers to adjust air flow/temperature? Got you confused yet? Ha Ha.

Thanks again.
 
Dave,

Thanks for the feed back. Here are my responses and follow-up questions. I will try to post some pictures soon.

First I plan on using the AMNPS. Couldn't remember what it was called. I'm making my own. One thing about me is that I will build anything before buying it. I have access to the same material. Wish they had those years ago. Wouldn't had to make as many trips adding chips. This will change my heat sources but I have different options at least.

Now for the venting. You posted this:

Top.. 2 each 1 1/4" holes sealed with a smear of high temp silicone... Change that to 1" holes 

Are you talking like a piece of 1-1/4 pipe through the top sealed? Keep in mind the cabinet is double wall stainless steel with insulation between. If these are towards the back of the top do I put the 2, 1" holes in the front edge of the bottom? Cross flow ventilation?

I would put them in the middle of the sides so there was an X pattern to the heat smoke flow... My MES has an exhaust in one corner, and seems to create a hot spot in one side..

Bottom..... 2 each 1" holes sealed the same... Change that to 1/2" holes, 1 on each side

The same here. 1" pipe through sealed?

Yep

 

Holes on the sides....low near bottom high near top

The same here. 1" pipe through sealed? Do you mean 2 on each side at the bottom and 2 on each side of the top or 1on the bottom and 1 opposite side top?

1 bottom and top vent on one side and 1 bottom and top vent on the other side....  

Do any of these vents need closeable covers to adjust air flow/temperature? Got you confused yet? Ha Ha.

That would be a good idea... Piece of tape on the inlet would work...  Aluminum duct tape.... poke a hole in it and enlarge if needed...  or seal it up...  Anything is better that no vents and no air flow...  

For the pipe, thin wall, get the pipe first... or use shim stock, rolled and inserted and glued with HT Silicone..

I rechecked the size of your warmer... I originally thought it was larger....  Sorry for the bad numbers the first time...  I have flared thin wall copper and used it for inserts and tubes on my stuffer... If need be, put a few 1/2" vents in the top in place of 1" vents...   although drilling through the walls of the warmer will be a

PITA...  

900x900px-LL-6fb6dc7d_tube5.jpg


Thanks again.
 
Thanks Dave for the update. I'm catching on about what you are saying. Need to look at some of the other build ups here before I start making holes in the warmer.

Take care.
 
More question for the new home built.

I'm adding an internal fan to the smoker for even heat and smoke distribution. It will have the motor outside on top with the fan blade inside with a deflector plate below the blade to direct the heat and smoke over to and down the side walls.

Now that I have decided to drop the hot plate for heating the chips and will use the AMNPS smoke generator I will add vents below the generator in the bottom of the unit. Any thoughts so far?

Now should I have a top vent or back vent close to the top? Thinking either one 3" or (2) 2" vents with dampers. 

Thanks for your input.
 
SmokingMeatForums.com is reader supported and as an Amazon Associate, we may earn commissions from qualifying purchases.

Latest posts

Hot Threads

Clicky