with the PSU on the sled, you run line votage to the sled to two power supplies,
one for the electronics/motors, one to the spindle
with the PSU on the frame, you have separate power wires going to the sled for
electronics/motors vs the spindle.
running low voltage a long distance isn’t a good idea (but is it really that
long a distance) and can radiate more noise (but does that cause problems)
personally, I plan to mount it to the frame.
but if you are thinking in terms of fairly ad-hoc uses (for example, if you
don’t plan on a permanent frame, just grab some handy 2x4s to make a frame as
needed, or use anchors in the floor, or something like that) then putting
everything on the sled is a clear win.
One issue is reduction in power cables. You can have one power cable that goes to the Maslow, then a little bit of hacking to get power from that to the spindle’s PSU, and then from that to the spindle itself.
The spindle’s PSU has basic power control (on/off) on its output to the spindle, which can be controlled simply by cutting the electrical connection between two jumpers. And which would be nice to control with the relevant GCode command (e.g. M0, M2, M5, M30) being implemented by the Maslow. So if the PSU is on the sled, then the cabling to control that is short, rather than going aaaaaalll the way back to a remote PSU.
For the entry level part of the spindle market (i.e. where I’m at) the PSU has a simple speed control potentiometer. To start with I’d like this to be easily accessible, so mounting the sled on the PSU would be preferable. Ultimately, I’d like to be able to control this with an S command.
Thanks. Looks similar to ones I have looked at in the past. If I remember correctly, it was able to interface with the original Maslow for speed control if it had a 10V implementation.
Is there an in built safety relay to automatically shut off the Maslow if an anchor point is lost/disconnected or in a thermal runaway? If so does the software communicate that to the user?
I’ll definitely be building my frame out of EMT conduit with Maker Pipe connectors. I’m not sure how it will do but I’ll find out. (You can also telescope 1/2" EMT inside 3/4" EMT, shimmed with 5/8" drip irrigation tube… but rigidity is questionable. ) I wonder if @bar is familiar with Maker Pipe, seems like something he might really appreciate.
There is an automatic shutoff if one of the motors stalls or if it deviates too far from where it wants to be indicating that something is wrong, but there are absolutely fault conditions that are hard or impossible to detect so we’re going to recommend plugging it into something like this for safety:
Welcome back @codeoptimist! I wasn’t aware of MakerPipe, but its super cool! I’m interested to see how it works as a frame. I agree that rigidity could be an issue depending on how it’s built, but hopefully we’ll be compensating for that so it might not be a problem.
EMT is substatially less rigid than unistrut (especially the smaller stuff), so
I think you would have to use a lot more of it to build your structure (no
overhanging beams like Bar is showing on the prototype, you’d need a full
rectangle of EMT to support the ends, an then add diagnal braces)
It could be done, and it’s a good use of a fairly cheap product.
Bar, can you please share the max force you are designing for a belt? That would
let us have much more intelligent discussions about frames
I’m not sure if I overlooked it nor if this is the right thread for it…
Anyways, is it possible to mount the v4 flat on a table or something similar? You know, for quick setup and storage switching. Plus, very often I only need to cut small(er) parts which do not need the full setup. My workshop is not that big and I can not have the huge setup permanently in it.
Hi, do you think the cord placement on the D26200 will interfere in some way as it seems to protrude from the top, which looks to be different from the DWP611?
I haven’t actually tried it, but I don’t think that would be a problem. It’s going to make the power cord stick out in an awkward way, but I don’t see it not working. I’d get the regular version if that’s an option, but if you already have one of these it should work.
Thank you @bar! I was researching if I should buy the DeWalt to go with the Maslow as you’ve designed it for the DWP and it seems to be a good option. Now I feel comfortable buying the European version even though the power cable is placed differently.
Happy to help! I learned something along the way too. I hadn’t seen those before…from most picture angles I just assumed the cord came off the same way on all of them.
@RomanG How does the power cord on the Ukrainian version look?
I’m assuming there’s been a significant impact on MakerMade sales - this in a recent email:
Hey Makers,
Our team is gearing up for back to school, with our own families, getting teachers prepared, and getting tools into hands of makers and future makers.
To celebrate, we’ve dropped our prices AND tacked on an addition discount. Our [M2 Kit] is now at it’s lowest price EVER! At just $748, this ultimate DIY kit can now be yours. Want more? You can now get the [Ultimate Bundle] (M2 Kit, 3D Printer and Laser Engraver) all for $1,498. That’s almost 50% OFF the original purchase price.
(You can also telescope 1/2" EMT inside 3/4" EMT, shimmed with 5/8" drip irrigation tube… but rigidity is questionable. 
