I want to upgrade the stock inline blower for my omtech pronto 40, any suggestions?
Generally speaking… find out how large a vent in the back of this is and look for a ventilation system that works for you.
I’d suggest removing the stock fan. If you’re not a hydrologist or someone who can compute the air movement. When you have more than one fan, one usually put a drag on the other one. Smooth vent pipes work best for less drag. The more straight the airflow the more air will flow, less resistance.
Virtually no one can do all of these. I’d suggest a ventilation fan that can draw from the machine and place the fan outdoors, if possible, but the closest you can get to the outdoor vent. Mine are not outside, but it would be more desirable.
With a vacuum any leaks, between the fan and machine will suck in room air, so it makes sure most of it goes outside.
Most of us can’t do many of what I’ve suggested, but you can pick what you can and can’t do.
If you keep it simple with as straight as possible air flows, it’s going to work best.
I have the 50W equivalent but mine’s a 5030 size. I have to leave the top open about an inch to allow air flow across the table and material.
Lots of people have different setups, so hang around and I’m sure you’ll hear other opinions.
Good luck
Thank you! Now I know what the holes in the front of the machine are for😅 I was like man this seems like a stupid design but turns out I didn’t understand the purpose
Here’s mine, stock vent fan, stock air pump, lid completely open. It’s cutting 5mm sub flooring at about 11mm/s@45% if I recall.
This was a while back, while I was still learning how to drive it. 
Have questions, ask.
Another thing I’m curious about is air assist, I have the stock pump but I was going to upgrade to dual air assist but is getting a larger compressor worth it? I suppose I could use the stock one for my engraving assist and use the newer larger one for everything else?
I have installed the advanced air assist as many people refer to it.
I have an external compressor, so I have twin solenoids that switch the air for me.
The left, allows regulated (at about 50lbs) air into the system anytime the machine is operating, using the Status sink.
The right one is wired to Wind – the Wind terminal goes low when the Ruida is executing a layer and the layer has air assist enabled via Lightburn on that layer.
You do need a snub diode anytime you are switching a coil.
Make sense?
I’m not gonna say I completely understand but I do understand enough to get started and I’ll tag in my friend at work to help fill in the gaps haha are all Ruida controllers essentially the same?
Also is the part I circled only do that pressure can’t build up in between the solenoids? And then the valve in to regulate pressure from the relief path?
Air is let in on the left solenoid when Status is active, it is blocked by the right solenoid. The only way around the off solenoid is via the flow restriction. This allows low pressure air to reach the nozzle anytime Status is active, machine is executing code.
When I select Air assist within a Lightburn layer and the Ruida is executing that layer, the Wind terminal goes active (low), opening the right hand solenoid, that bypasses the restriction allowing full pressure air to reach the head.
The outputs are open collector, so one wire from the solenoids are wired to 24V, then the other wire to the Ruida. When that output become active, it complete the ground to the solenoids.
Make sense?
You have to use snub diodes across any coil you’re switching. I use 1N914 small signal diodes, but about any diode will work.
It does! Thank you for the help🤗
After testing around 15 models of different shapes and sizes, for me the best is a recycled household vacuum cleaner, with a protective grille to avoid sucking up incandescent pieces, everyone confuses cfm in m³/hour and suction power in k pascal, provide an air inlet in a horizontal slot, more laminar