Almost finished. I've got the beast assembled and optic aligned (well mostly). I'll be doing my first cuts today which will be the front and rear panels for the electronics.
- In it's new home
On the front panel
1) E-Switch for power.
2) Power Switch for Air Assist (lighted on position)
3) Amp Meter for power checks
On the rear panel I have
1) Dual outlet - Top controlled by air assist switch up front, bottom always on for water
2) Ethernet Jack
3) USB for memory stick
4) USB for computer connection
3) Power In
I also put my fume extraction on a wall switch so I don't have to crawl behind the table to turn it on anymore.
I did have a mishap while move parts between my old K40 and the new buildlog machine. The old tube is just a little to big for tube brackets. The tube fits fine but between the electrode that was already soldered and the existing short tubing it was a very tight fit. Which lead to a broken water intake
. Luckily I was able to find a 90 degree elbow that fit in the hole almost perfectly. I put two coats of epoxy on it and attached a new short hose segment. Of course I installed that after the tube brackets where already on. I imagine when I have to replace this tube I'll have to break it to get the brackets off.
- Dr. Epoxy to the rescue
So far I'm pretty happy. Doing try testing before the laser tube was moved over I could only run the machine at 625mm/s before it obviously was behaving poorly. At 650 or over engraving speed I would have gross overrun where the carriage didn't stop and go the other way. What kind of speeds are other folks getting with your 2.x? The only modifications I've done are a inverted z-motor adapter and 40mm extra x area.
My Electronics:
1)
Nema 17 - 400 Step Motors from the maker slide store2)
LightObjects 608 DSP Controller3)
2M415 1.5A DriversI have the stepper drivers set to 1.5A and quarter steps which gives me 1000 steps per inch.
DSP Settings
X Pulse Unit - 25.4
X Pulse Edge - Rising
X Datum - Positive
X Key Direction - Positive
X Range - 575
X Start Speed - 10
X Max Acceleration - 10000
X Max Speed - 625
Y Pulse Unit - 25.4
Y Pulse Edge - Rising
Y Datum - Positive
Y Key Direction - Negative
Y Range - 270
Y Start Speed - 10
Y Max Acceleration - 3000
Y Max Speed - 500
Space Speed - 200
Start Speed - 10
Speed Factor - 2
Space Jerk - 40000
Cut Jerk - 25000
Min Acceleration - 100
Cut Acceleration - 1500
Space Acceleration - 2000
Engrave Acceleration - 10000
I haven't tested the limits of Y so those settings are just guess. The X settings are from dry testing where things break down. Now that I have the system up and running with laser I'll have to do more test to see if 625 is viable or missing steps.
Things I have left to do:
1) Install Z Drive belt (If they ever come back in stock)
2) Install Z stepper driver (Have a few easy driver stepper boards, I'll probably just hook one of those up when the belt gets here.)
3) Cut new window. My holes where a bit off between it and the top skin and I only could grab 1/16th acrylic when I was out.