(Part 2) Best products from r/hobbycnc

Hi everyone! If you liked the electronics enclosure you can download the design files here -

• https://grabcad.com/library/3-4-axis-cnc-electronics-enclosure-1
  

• https://www.thingiverse.com/thing:2756470
  

  
  

  And here's the part list!
  

  
  

  QUANTITY | COMPONENT NAME | LINK / COMMENT
  

  ---------:|----------|----------
  1 | 7I76-5I25 PLUG-N-GO KIT | http://store.mesanet.com/index.php?route=product/product&product_id=215
  1 | DROK LM2596 Analog Control Step-down Regulator Module | www.amazon.com/gp/product/B019RKVMKU
  1 | DC Fan (120mm x 120mm x 25mm 24V) | www.amazon.com/gp/product/B01FBPQMXW
  1 | Mesh Dust Filter for 120mm Fan | www.amazon.com/gp/product/B01M0A2UH0
  3 | DIN Rail | www.amazon.com/gp/product/B015E4EIOK
  1 | IEC320 Inlet Power Socket | www.amazon.com/gp/product/B00ME5YAPK/
  4 | KL-5056 Stepper Motor Driver - 32 bit DSP Based | www.amazon.com/gp/product/B00O6DC8PW
  1 | Emergency Stop Button Switch | www.amazon.com/gp/product/B0094GM004
  25ft | 4 Pin Cable | www.ebay.com/itm/20M-4-Pin-5050-3528-RGB-LED-Strip-Light-Wire-Extension-Connector-Cable-Cord-Line-/282110056592?hash=item41af11d890
  1 | Antek Linear Power Supply - 500W 30V 16A Peak 25A With Passive Filters / EMI-RFI Filters and Suppressors | https://www.ebay.com/itm/PS-5N30-500W-30V-16A-Peak-25A-Stepper-Motor-Antek-Linear-Power-Supply-/371664502398?hash=item5688ee3e7e
  3 | Wall Outlets from Home Depot | Find ones you like / feel are safe enough using
  16ft | Led Strip Lights | www.amazon.com/gp/product/B01GJ3O0J8/
  1 | Misc. Hardware | Nuts, Bolts, Standoffs, Crimp Connectors, Spare Fuses, 2 Extra Limit Switches
  2 | Ogrmar SSR-25 DA Solid State Relay with Heat Sink | www.amazon.com/gp/product/B074FT4VXB/
  1 | 18 AWG Gauge Stranded Hook-Up Wire Kit | www.amazon.com/gp/product/B00N51OO7Q
  ~30pc | Heat Shrink Tubing | www.amazon.com/gp/product/B00OZSL8UE
  1 | Shop-Vac | www.amazon.com/gp/product/B00EPH63K0
  7 | Uxcel 16mm Thread 4-Pin Panel Mount Wire Connector | www.amazon.com/gp/product/B016FCZ5SS
  2 | 8 Circuit 20A Terminal Block | www.amazon.com/gp/product/B000S5Q2VS
  
  Best of luck! Feel free to PM me or comment with any questions or feedback!

It’s a touchscreen designed for the Raspberry Pi.

I’m playing around with different g-code senders so for now it has Sourcerabbit G-code sender but I’ll try various ones until I find the one I like best.

OK, I have a few more suggestions:

1. I changed my mind about the potentiometer, as it is probably over-engineering it and is inefficient electrically. You could set up a boost circuit like this with an additional battery.
   http://imgur.com/a/8ykgb
   
   
2. You should probably just increase the voltage of your battery.
   
   The battery you're using is NiMH. These batteries are significantly heavier than a LiPo, thus increasing the weight of your vehicle, and increasing the amount of force required to move it.
   https://www.amazon.com/Floureon-Battery-Quadcopter-Helicopter-Airplane/dp/B00HWQ3JVM/ref=sr_1_1?ie=UTF8&qid=1498454243&sr=8-1-spons&keywords=lipo&psc=1
   this battery is a LiPo, it has a higher capacity at a higher voltage. If your motors are almost doing the job at 8.4 volts, I bet it would run fine at 11.7 volts with this new battery. Also, it is about 60 grams lighter, not including any additional mechanics/circuit/battery you need to get your extra push youd need with the other battery.

You'll probably be disappointed with that to try and work aluminum. I have a 3018 and while the spindle might engrave (lightly) aluminum, I do not believe you'd have much luck cutting it. The spindle is very weak, maybe 100W at best. I gave up trying to mill PCB's as well. It was just too inconsistent, even with surface mapping.

If you are working with just anodized aluminum panels you might want to look into a laser engraver. The laser vaporizes the dye in the aluminum so you get nice clear lettering. You can also make nice PCB's with a laser. I took the spindle off my 3018 and installed a laser and was able to achieve this. You spray paint the board, vaporize off what you don't want with the laser, then etch normally. 2mil traces no problem. The dedicated laser engravers you see all over amazon and china are much faster than a router for this.

If you still want to go the router route, get a better spindle. a 300 or 400W will make all the difference in the world, and there are models to reprint the holder to fit. I plan on trying this again eventually. The spindle is the biggest setback for these cheap routers.

I got a replacement vacuum hose for a normal vacuum (not a shop vac) for like $7: https://www.amazon.com/gp/product/B01CP09P2G/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 and it's great because it's very flexible and elastic so it shrinks to size. Way easier to work with than those rigid shop vac hoses.

I ended up getting a double loop coupler this one so far it had reduced most if not all of the wobbling issue I was having it allows the shafts to be a good 2 or 3mm off and still spin as if they were perfectly aligned. I didn't think it would be very good because it looks like it wouldn't, but it actually seems decent so far. just waiting to see what the life of the thing is. hopefully it doesn't rip apart after 10 hours or something.

I can't recommend a machine as I only have an MPCNC, but you will definitely want some bits for your router. Perhaps start with a 2-flute upcut flat end mill. Since you're looking at a larger footprint machine, I'm guessing you'll be milling signs and stuff. If that's the case, you'll also want a collection of V-Carving bits. Unfortunately, you can't buy these before you know what CNC machine you're getting because you don't know the size of the collet on the spindle. In any case, you can easily find cheap bits on Amazon.

Since you're just getting into milling, you'll probably want to get some sheets of High-Density foam to try your first cuts in. It'll save you from busting bits and destroying your workpiece. You can get that at any big box home improvement store and it's fairly cheap. Finally, get some decent eye and ear protection!

It was a kit like this that I bought. Amazon is the most expensive place to get the kit, but I like how easy returns are if something goes wrong. Thanks! I just happened to stumble across the drive-in nuts when I was at the hardware store looking for regular nuts and decided the drive-in ones would be a better option.

Thanks, good to know, I ordered some limit switches to install.
I have an old raspberry pi 2b, I have read about people running CNCJS. Would that allow me to run it remotely.
Looking to run it in the garage hopefully without a laptop running it, but I could cobble something together.
I do have access to a 3D Printer so I am going to do some upgrades.

I want to mill Hardwood, just outlines for now.
I have some of these bits: https://www.amazon.ca/Carbide-AFUNTA-Milling-Acrylic-Hardwood/dp/B07FGFHTG8/ref=sr_1_9?crid=2EQ6A8Q98GGQ&keywords=cnc+router+bits&qid=1571626316&sprefix=cnc+%2Caps%2C164&sr=8-9
Should that be fine or should I look at something else.

I get some burning with a depth of .5mm per pass and 120mm/min feed rate.

That sounds like a cool project, can I ask what features are being added with IOT integration? I assume the loadbank is for testing the generators?

Here's a pretty good motor control video that explains the basics. If you post a picture of the diagram I can probably help you with the connection, it might even already be correct.

I'm used to magnetic motor starters so that's what I suggested but for such a small motor you can probably get away with a horsepower rated 3 pole switch like this and skip the overloads.

Here's a video of it actually cutting (Same music, mute for sanity).

There are very few "DIY thing for very few dollars!" videos that are actually honest, like from the ground up with no existing or salvaged materials (one counter-example I saw is an FPV drone setup for $300, thanks China!).

He said he salvaged the motors from an industrial printer, which cuts down on the cost dramatically. In the comments he says "Only thing i ordered online is the arduino and the stepper motor drive". So he probably sourced all the metal and bearings locally for cheap.

Looks like the Makita trim router he's using is coming up as ~$117 for me. I doubt that's included in the cost.

You can connect them straight to the arduino. I think it would be a good idea to use something with screw terminals like this:

https://www.amazon.com/gp/product/B01JFQQXRS/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Though this one is meant for a regular uno.

I have the 90 degree version of this: https://www.amazon.com/Amana-Tool-RC-1148-Insert-V-Groove/dp/B01N37GX4I/ref=sr_1_3?crid=W3T929BUYHNQ&keywords=amana+60+degree+router+bit&qid=1562557944&s=gateway&sprefix=amana+60+degr%2Caps%2C230&sr=8-3

And the cut quality is amazing compared to standard bits. Also has the advantage of coming to a proper point (no flat on the tip) so things like the tips of the stars can be so much more crisp. Worth every penny imo.

Make sure the collet matches the tool too. I bought a cheap set like this on Amazon and a spare nut. I keep the one nut on the 1/8" collet and one on the 1/4" collet and very rarely use any other diameter

Would something like this be beneficial? https://www.amazon.com/dp/B077GN3XNT/ref=sspa_dk_detail_7?psc=1&pd_rd_i=B077GN3XNT&pd_rd_w=zotyR&pf_rd_p=45a72588-80f7-4414-9851-786f6c16d42b&pd_rd_wg=veliU&pf_rd_r=TF320NEZS6HG8KNFPV8Z&pd_rd_r=51b980e5-c897-4ce4-a332-ed12e0c6693f&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyWTVDSE0zSTBZWE1VJmVuY3J5cHRlZElkPUEwMjg4NTk2MldaUVI5WExJVjZXTCZlbmNyeXB0ZWRBZElkPUEwNTczOTIzMU5LV05IVjhXSzRCMSZ3aWRnZXROYW1lPXNwX2RldGFpbCZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

Fair enough, would the marketed z travel account for the bit or am I losing a few cm of total travel?

With this, it looks like I can just print a bigger housing and swap in longer rods?

here's the upgraded model

I saw amazon has it today for 200 after coupon. My first thought was to come here and see if they are at least decent. Maybe entry level. I did a search and there are 4 results including this one.

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https://smile.amazon.com/gp/product/B07P6K9BL3/