Model slicing problems

[Roena]

Hi, So I'm new to this and have been trying to get my Ender 5 Pro with an ABS filament (though currently testing with the free filament that comes with the printer, since the ABS stuff we have is specialist and kinda expensive - just wanted something food safe and capable of making waterproof prints if needed) to print some casings for naked sensors I'm assembling with an arduino. I have other sensors to work on too, but I think if I'm struggling this much with the first one, I should probably aim to manage one set of problems before running head first into the next variety of challenges. The sensor is known as a DHT-22 sensor and monitors temperature and humidity. Link below in case you wanted to look at the sensor itself and come up with your own design. https://thepihut.com/products/dht22-...AvD_BwEI'm modelling in Blender and have made numerous efforts to increase thickness of the walls of the model in hopes of helping the slicer to pick up what I'm requesting of it - but the part is small (only ~15mm along it's longest dimension). The design needs to be something that can secure the sensor inside and provide a channel through which a tie wrap/cable tie/ zip tie can be run through to mount the whole thing to various surfaces. The design I'm aiming for is attached (most unmodified version - I've been learning blender alongside this and my efforts to make the model better fit have been... Let's say less than pretty... Any advice on how to more effectively shape the model so as to give Creality slicer the best odds of effectively making a stable print would be hugely appreciated. Thanks for reading!