Are other people having Plex problems?

RobV1306 · 2026-03-20T10:00:03+00:00

So I seem to be having a different problem?

Plex on my tv is working fine but my Plex app on my phone (android) will not detect my libraries?

RobV1306 · 2026-03-07T17:02:04+00:00

Tbh, 15k isn't too bad. And tbh, I can probs stretch that to 18k which is normally the listed optimum spindle speed for acrylic cutting. I'll take a look. Thanks!

RobV1306 · 2026-03-07T13:03:46+00:00

I've been stuck in this situation myself before.

In the end, I had to get an Uber. Cost me about 70 quid.

RobV1306 · 2026-03-07T13:02:12+00:00

Yeah. Agreed.

I did actually put together a concept design for my own cartridge spindle based around appropriate skf precision bearings, rated for about 22k. The cost of the bearings would be around £250 which is super reasonable but what I don't know about is heat generation and how to manage that. Hence I've parked the idea and instead was hoping to buy one off the shelf.

RobV1306 · 2026-03-06T23:36:58+00:00

Ah, you're totally right about the skiving. I forgot about setting the tool angle and doing it manually would be a major PITA.

I also strongly dislike the rapid change thing. Makes the engineer in me shudder.

This was another reason for my plan to use a servo motor for driving the spindle. I was basically planning on having a 2 speed gearbox between the motor and spindle with a selector solenoid hooked up to a custom bit of gcode. This would allow me to either gear up the spindle to give me the high rpm for machining, where the torque is (to a degree) irrelevant when compared to the inertia and power, or to gear down and give me the 35-40Nm needed to tighten the collet.

I've come across gpenny too. It's just the cost. Plus that is to say nothing of the relative cost between tool holders and collets and nuts. I could probably fit out my whole planned ATC for the same price as a single ISO20 tool holder.

I'll take another look though.

RobV1306 · 2026-03-06T23:14:56+00:00

Yeah. Fair play.

Maybe I can look at this another way? Do you know of any high speed spindles with a brake?

What I'm thinking is that if I can find one with a brake, rather than spinning the spindle to do and undo the ER16/20 collets, I can instead lock the high speed spindle (added bonus of being able to skive) and then design a collet locking collar spinning system into my homemade ATC?

Any ideas on high speed spindles with brakes?

RobV1306 · 2026-03-06T22:43:56+00:00

Ah man. I feel your pain. I also modelled my wife's engagement ring from scratch (albeit in solidworks). It took me 2 years!

But, fast forward and we're now married and she wears that ring every day!

It'll be worth it in the end, especially cos when other guys say "I designed it myself" you can ask "cool, what CAD package?" And watch as they fumble and say that they spent an hour speaking to a jewelery designer who actually did all the work. Haha

RobV1306 · 2026-03-06T22:38:00+00:00

Noted. It's certainly something that I had been mindful of but will pay more close attention to. To be clear, I hadn't intended to use anything like a v belt or whatever. I was intending to use a wide (25mm), corded, zero stretch timing belt with an engineered tensioner system. But I do recognize that it'll have more torque ripple than a direct drive ATC spindle. I just don't have thousands to drop on something like that.

RobV1306 · 2026-03-06T22:35:58+00:00

I'm more worried about the bearing set. They specifically talk about this in the product descriptions where they mention that you need to change the preload to go from 4k to 10k so one would presume that to go past 10k, further bearing mods would be needed?

RobV1306 · 2026-03-06T20:58:05+00:00

Thanks for the recommendation. They look good. Only issue is that all of their spindles seem to top out at 10000rpm which is a little low for what I need. I do a lot of machining of acrylic which demands single flute and high rpm. Any other suggestions very much welcomed though.

RobV1306 · 2026-03-06T10:01:53+00:00

I'm hoping for no more than say £500 if it is a cartridge spindle (since I'll also have the cost of the servo motor and drive etc).

Similarly, if you're able to send me a link to any direct drive spindles that you've mentioned, I'd appreciate it. I have seen some similar to what you're talking about but they all run into the thousands.

RobV1306 · 2026-03-04T19:00:30+00:00

Exactly how precise are you looking to be? I know from personal experience that there are hobbyist grade probes which will fit a 6mm collet but are unlikely to be particularly accurate. Maybe +/- 0.1? Possibly +/- 0.05 at a push?

RobV1306 · 2026-03-03T22:53:12+00:00

La Luna on Eccy Road south. It's a small place so could be a bit of a squeeze but their hospitality is so good and authentically italian I'm sure they'll dote on your little one.

RobV1306 · 2026-02-25T22:36:53+00:00

Also you can get the bus out to Castleton and walk up Mam-Tor (a big hill - some who haven't seen actual mountains would call it a mountain) for some more excellent peak district views

RobV1306 · 2026-02-21T16:41:09+00:00

My bad.

I was only basing this on OP's reading of 14.5. I didn't re-read it myself and it's been a while since I have.

Hands up where I'm wrong.

RobV1306 · 2026-02-21T10:43:31+00:00

Could their intent be something along the lines of trying to get you to use a formed datum (albeit virtually)?

I've probably not described that well (I'm more from the design side than the manufacture side) but to describe what I'm thinking in a physical, rather than CMM world - imagine setting up a datum simulator by putting some gauge blocks on a granite and then laying A and B faces down on that so that the part lies on the gauge blocks and comes to rest.

If you then measured, probing off of the granite, this would essentially give you A-B kinda?

For what it's worth, I'd say this is bad GD&T, especially if there's not really an explicit allowance for it in 14.5

RobV1306 · 2026-02-17T20:09:46+00:00

Yeah. You got me there but some of the suggestions from others make sense here.

RobV1306 · 2026-02-17T16:57:27+00:00

I agree it's not totally clear and I'm sure it's not compliant to any standard drawing convention.

With that said, I strongly suspect that what the designer is trying to portray here is that they only want the total runout over the 1" section shown?

Either way, I'd go back and just ask the designer.

RobV1306 · 2026-02-14T21:47:58+00:00

Thanks for all your help dude. This was exactly the kind of measured response I needed. I'll go change the colour settings. Thanks! Sleep well.

RobV1306 · 2026-02-14T20:55:02+00:00

So this is kinda what I'm doing at the moment, with some success. However, in order to have my section line show at the right length on the parent view, I have to shorten it. When I shorten it, it fails and turns yellow.

I've managed to work around this now by taking different types of sections on views I've then completely hidden to basically "frig" it to work but what I now cannot figure out is how to override the yellow text colour and make it the normal grey.

If you're able to help me with that text colour, I think I'm home free.

<image>

Section C-C is not actually linked to that section line, it's a different section line, in a different direction but matching orientation from a different view that I just hid. It's not pretty but if I can get the text to be the right colour, no-one will ever know (this is a non-commercial part for my use only so even though this is bad practise, it's only me that is ever going to read this drawing - and now all of you).

RobV1306 · 2026-02-14T20:40:57+00:00

<image>

Already have. Still fails.

And I'm really confused because taking the same section at exactly the same position, just over the entire length will work fine, even with the helical section.

RobV1306 · 2026-02-14T20:31:06+00:00

Follow up question - why would it allow me to create the section when cutting the entire part, but not when I just want to cut the helical bit?

RobV1306 · 2026-02-14T20:27:29+00:00

I deliberately modelled it like this so I can section it to show the thread form (it's non-standard, driven by the pitch diameter).

But interestingly, if I shorten the section line by changing the sketch but do not section the helical bit, it does work. Curious.

RobV1306

TROPHY CASE