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Well I'm not sure if I have any PE foam or not, I don't really know how to tell by looking at it or I'd be happy to try it for you. I'd like to cut some also.

I did find this video that may...

So I have had a little K40 for years, I've done several modification to it and it works pretty good. I'll link a couple of videos of it. I've made a lot of good quality cool items with it !

But...

Regarding driving the axis, I was reading another thread here that seems to indicate the Avid CNC rack and pinion system may have too much backlash. I'm planning to order 3 of these for nema 34's. 2...

That's all good helpful info. I decided to go with a 1.5k water cooled, ER20 and VFD.

I ordered 9'-2" (2800mm) of 20mm linear rails for the Y and 5'-6" (1676mm) 20mm for the X from Automation...

Good points, I care about both of those, and the quieter the better. I was avoiding the water cooled type just because of the additional pump, lines and tank but that's really not a big deal to get...

I'm trying to select a spindle for this build.

Any opinions on this...

Well with that said, and since I already have several older very good PC's, and have used Mach3 for years on an X2 CNC mill as well as my previous CNC router with zero issues that couldn't be...

More great ideas that I hadn't thought of, thanks and please keep'em coming !

Right on the length, I have it designed at 108" now. So I plan to order 2800mm linear bearings, probably 20mm or 25mm ones.

GREAT idea on the music wire ! I'll do that, thanks ! And yes, I'm real...

Thanks for the replies. The gantry uprights are designed as 1" thick aluminum plate with 3/4" aluminum rectangle bolt on to them at 90 deg. They do look flimsy in those pics, I'll post better ones...

I'm about ready to start welding steel. I haven't purchased the steel yet but expect to on Monday 6/21/21 so still time to recommend any design change. This is my 4x8 design and I plan to use the...

Is this the way to connect 2 switching PSUs in series ? I've never done this with these type.
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Again, ALL GREAT info !! You've helped me a lot.

I'll check out the higher wattage PSU's. I'll certainly at least have the power input fused. The RCD you refer to makes me think of GFCI breakers...

That is a wealth of great information ! Thank you !!

Based on what you stated, I'll forget about the closed loop and go with standard ones. I don't recall ever having any issues on my mill or...

OK, we were posting at the same time. I'll thoroughly read all you posted.

I had actually looked at Steppersonline but hadn't really heard anything about them. I'll look further into to them.
...

Thanks, I looked at Leadshine after your post, what I found was a quite higher price increase.

Unless I hear negatives, I will order the set I linked to along with a 4th driver and motor.

I...

I built a small DIY router seen below but it was too small and considered buying a Chinese 4x8 but after much research didn't feel comfortable ordering a $6000+ machine from China !

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This...

I sold my 4x4 DIY and now looking for a decent 4x8 for around $5k ish.

I'm really liking this one:
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Near the price of a Tormach ? well I guess I'll consider that a compliment but I never dreamed of being anywhere near the cost of a Tormach, what are they, around $8K ?

I certainly don't expect it...

Here's more info on my machine....

https://youtu.be/unSXV-HA0RU


My great CNC Mini Mill. It's in excellent condition with many upgrades and works perfectly, VERY accurate. Details as follows:...

Really not sure where to post this question. I'm thinking about selling my beloved Grizzly G8689 CNC and not sure what it should sell for, a few suggestions would be appreciated !

It has CNC...

OK, after a LOT of searching and reading, and not finding anything even close to my problem I finally found a solution.

I found that I had to place a 3.3K resistor inline with the negative...

I need some advice please....

I've been using these sensors for homing on my CNC router for a few years and they've been working great. I have also been using one Dell PC to switch between my mill...

That's very kind of you to do that ! Thanks very much. I'll check it out and reply.

Thanks again !

"One of the first things I discovered about simulation is that it's very easy to make cool looking graphics that are completely wrong." LOL, YES ! I discovered that quickly too !

I'm attaching...

Wow Keebler, that's impressive. My dad was an engineer and that's the same kind of way I saw him solving problems. However, I've forgotten how to do so many things like this because I've grown so...

Thanks very much for your time and knowledge helping with this ! I can zip the files and post them if it will help but as you can see, they are super simple.

Basically we are just concerned with...

Thank you for your help and advice. When I set it to true and IPS, it doesn't show any deflection, as shown below.

Can you please tell me what settings I need to do in the simulation to be sure...

I'm trying to determine the thickness of steel plate required to support a machine that weighs about 1500lbs. Details are:

6 inch C-Channels 78 inches long

steel plate on top 48" x 78" x...

Of course ! Thank you !!!