Step 1: Getting Started:
Once the heater was installed and the flue run up through the roof and everything cut to the correct height, I had a 42cm offcut of 6" flue leftover.
After having a look to buy a prefabricated flue cap and seeing that the prices started at $50aud, I decided to just make my own.
Step 2: You Will Need:
Your flue pipe offcut
stainless steel pop rivets (dont use aluminium, they will melt eventually)
Drill & bits (I used 3mm)
Pop rivet gun
Grinder (or dremel with cut off discs)
Gloves (I didnt use gloves, and well, most of the red in the pics isnt permanent marker...)
Cardboard or thick paper
A hole punch or big nail could be handy too
Step 3: Cut the Flue Piece:
Once it pops open, carefully turn it over and flatten it out as best you can.
I used a couple of pieces of wood and stood on it. Actually worked out pretty well.
Step 4: Trace Your Circle:
This will be your template for cutting the circle from your stainless steel so have a play around until you find the size that works best for you.
Draw a line down the center of the paper and cut it half way through so it can be folded into a slight cone shape, this is how big the finished cap will be.
When you have the size you need sorted out, trace it onto your flat piece of steel and cut it out with the tin snips.
Step 5: Folding the Circle:
Step 6: Supports:
Pop rivet the end with two holes to the top of the chimney flue.
I installed mine on a 20cm piece of male edge flue which just needed to be slotted in to the top of the chimney on the roof.
Step 7: Putting It Together:
Step 8: Done!
After installing this my wood burns longer, theres no down drafts, no more rain coming down to damp the coals and most importantly, no more sparks shooting out into the air.
Step 9: Enjoy:
Always better to check these things first.