Fire brick splits?

Is it possible to use the splits in the building of the jtube? They are half the price of the full bricks and would save me a considerabke amount of money.

Yes, splits are the way to go for this. Fast and effective, not to mention durable.

Robert;
I'm not sure where you are getting your bricks from, but I get mine from the manufacturer, and split bricks cost about a third more.
Full bricks are just over $2.00 each and splits are $2.75.
Having used both, I agree with Fox that full bricks self-support and splits need a backer.
It also has been my experience that a split brick is more prone to cracking.

Hi Thomas
They are used splits and i can get them for 75c each. The full fire bricks are 4 bucks a pop. So quite a saving. Im figuring im going to need 70-80 fire bricks in Total for burm chamber and riser

Robert if they are heavy bricks (even split ones) you do not want them as a riser.
Where are you sourcing your bricks?   A masonry supply house?  Those new full bricks should be in the $2 range, not $4.

Heavy bricks take time to warm up, while they are warming it is very common for the rocket to want to run backward and vent into your home.
On the flip side once a heavy brick riser is warmed up it will maintain a powerful draw without a fire.