How to build a trailer for utility or camper base

I built a utility trailer 5x10 based on the 3500 lbs axle. The process is pretty straightforward if you have plans. I draw all my plans in Fusion 360. If you need plans, send me the request, it's free. First, I cut the tubes(1x2) to size using the band saw. Next, weld it together to make a frame. The more advanced part is the tongue. I use 2x3 tubes for it and 3x3 for the coupler bar where the coupler is bolted. This part is extended to match the clearance of my truck. The horizontal lines of the truck and the trailer should be the same for better and safer towing. The tongue tubes is starting from the point where the front eye of the leaf spring is connected to the frame. The other most important part is the position of the axle on the frame. I used some calculations to predict the weight distribution. Of course, it's just a raw guess based on my understanding of this issue. If you decide to repeat the steps you need to make sure you understand what you will put on your trailer. For a camper and a utility box it will be different, the position of the axle may vary.
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Camper details:
- based on the short bed Toyota Tacoma TRD Offroad
- floor: plywood painted with polyurethane varnish and Flex Seal for the bottom
- walls: composite material beBond
- insulation: XPS Foamular 1 inch
- interior: FRP white panels
- integrated frame: aluminum tubing
- SeaFlo water pump
- 13-gallon water tank
- Renogy solar panels, controller and DCDC
- 1kW inverter
- Propex heater
Camera equipment:
- GoPro 8
Truck modification:
- 2017 Toyota Tacoma TRD Off-road MGM
- CBI T3 front bumper
- Smittybuilt winch X2O
- Fox shocks
- Deaver leaf springs
- ARB Safari snorkel