I missed the post where you said you would pattern the hatchers dimensions based on a sportsmans hatching tray. I was thinking you were looking for higher egg capacity. I think just one fan- heater unit will work for a smaller hatcher.
So I drew up a plan based on the single layer of eggs design. Fairly simple cut list for a 31 1/2"W x 221/2"D and 12" H exterior dimensions Not not sure how large you are willing to go. This size hatch would hold 120 + chicken eggs. Top mounted fan / heat element. Swing
down front door design...
I was looking at the incukit looks like it has a flat plate (heating element) the fan blows againt to distribute the air to the sides. It mentions the fans being high speed which is good for air circulation but might be very loud. The reviews looked positive anyway. Get your box dimensions...
Most table top incubator have the fan centered in the top blowing up with outlet vent holes directly above the fan. The inlet vent will be near the bottom. In theory air blows up and out, down the sides , across the eggs and returns to the center of the incubator. I don't think the air...
I use either a solid bottom tray or a liner over wire bottoms. I use the liner in the solid wood trays as well because its easier to clean after the hatch. I would forget trying to flow air through the trays top to bottom. I had terrible results with that design, but other people say it works...
In my experience, significant temperature layering top to botton is a sure sign of insufficient air flow. The air flow needs to be really positive in a cabinet style set up. The number of fans, size, speed and volume are really important to achieve a uniform temp. That being said, sportsman...
I never achieved a uniformed air flow with a top mount heater/fan over a single layer of eggs . You may have better luck than I did. I hate to think of the time and money spent trying different designs only to discard them. I found directing the air front to back thourgh the egg trays gave me...
After testing a lot of designs I settled on a cabinet with heaters, fans humidity pan on the top shelf and egg trays below. I was selling them at the time. The typical arrangement i'm sure you've seen. The number of fans, size and speed will determine how well the air flows. In this style...
Dedicated hatchers are the way to go. I've built a number of custom wood cabinet style hatcher. 150 eggs in a single layer will make for a sizable foot print but is probably the simpler design to build. Any guess yet as to the dimensions? Curious how evenly the Incukit will distribute air flow/...