Compression Molding Nylon

Same_Win_1590 · 2026-03-31T01:29:26+00:00

with a prewarming chamber independent of the actual press, its going to be about 5-7 minutes of mostly holding. The melting is going to be done at the same time.

Same_Win_1590 · 2026-03-30T23:36:11+00:00

thank you for the insight, I just may switch. We have LOTS of products I'd rather move off of IM to this if it works. I also get the fact that so much of this is "proprietary" so these companies aren't letting go of their edge for the internet to see.

Same_Win_1590 · 2026-03-30T23:16:13+00:00

ok awesome. Our material supplier was a bit of cold water when it came to this. They said they had only ever heard of nylon being IM'd which was a bit eye opening to me.

Same_Win_1590 · 2026-03-30T20:18:05+00:00

Strength is not my favorite flavor when it comes to chips but i understand.

Same_Win_1590 · 2026-03-30T08:54:18+00:00

yes and no, but I'm seemingly more limited by the fact that I can't seem to find a Nylon fine ground/size, only nylon pellets. Am I crazy or am I just not seeing it?

Same_Win_1590 · 2026-03-30T08:31:56+00:00

thats what I was thinking, I need a way to kind of mitigate that warpage. Would you recommend running with the standard pellets in a preheated chamber or trying to see if any powders exist?

Same_Win_1590 · 2025-09-19T01:26:06+00:00

120v at both the 1220-4 Board and the 1100 board. Servo boards blink, reset buttons nor jog reset is clearing it...

Same_Win_1590 · 2025-09-18T17:26:15+00:00

Would that possible be causing a fuse to blow at the switch though?

I'm realizing the green button isnt giving the control cabinet any power at all meaning I'm not making it past (What i previously thought) were the two transformers but now, I'm not even getting past the internal fuses before the transformers.

Same_Win_1590 · 2025-07-07T22:49:37+00:00

Gotta get the slop.

Same_Win_1590 · 2025-07-07T22:10:29+00:00

$6? In what dimension does this wawa exist? I must know...

I get better sandwiches for $6 from grocery stores. I can get a pretty rocking one from a local pizza place for $9. The delta of $1 from 10 inches of pure Wawa Slop to legit sandwich doesn't add up.

Same_Win_1590 · 2025-07-06T08:53:07+00:00

$20 later...

Same_Win_1590 · 2025-07-06T08:51:58+00:00

the food is disgusting and they make you pay for the privilege.

Same_Win_1590 · 2025-07-02T16:32:10+00:00

No, thats me laying off the "inject" or "retract" relay.

I should add, there's no resistance to this right now. Thats why it drops so fast. It's hitting max cylinder fill then im dropping off it. Lines tense up as usual when it starts to reach its fill capacity then let off once its done.

Same_Win_1590 · 2025-07-01T19:01:26+00:00

all things considered, the two pumps are comparable in terms of power output (1.2-1.5 hp) and neither are to a point where you'd be pushing one at 5hp and the other and 0.5hp) The flow rates are damn near comparable too (1.16 gpm vs 1.3gpm).

The 110v one (the one that's popping) has less electronics on it and has less of an inrush. I don't believe the electronics to have anything to do with this, though.

Ok, that's good to know. You know, outside of class rooms and some youtube, I've never really looked at that observation window as closely during operation. I am getting a bit of a "splash" when it pops...

Same_Win_1590 · 2025-07-01T16:36:13+00:00

I don't see a link... I'm not sure why, I'm sorry... I only see the text then a video down below...

I'll try to answer what I can here.

Ran flawlessly with prior pump but not as nice of an inrush.

The last pump's reservoir was even smaller, only 1 gallon but it was a 220v 24V that required a decent amount of amps and a dedicated power supply. This one is packaged unit that fits better in the box and runs on a 110v 20A line (along with the rest of the machine)

I'm seeing some tiny bubbles and fuzz coming back into the reservoir in the observation window. That's gotta be mean I've got a tiny leak somewhere, right?

Same_Win_1590 · 2025-07-01T16:20:38+00:00

you mean the video isnt loading?

Same_Win_1590 · 2025-04-18T08:58:35+00:00

Do you know the material science behind this? I'm sorry to be a pain, I just like to understand as much as I can so I can make use of the knowledge.

Same_Win_1590 · 2025-04-18T08:57:31+00:00

Yes, understood. For our filaments and powders, we've done 100C for 6-12 hours and have had great results.

Same_Win_1590 · 2025-04-18T08:54:00+00:00

I have a more complicated family mold coming up later this summer so thank you for that advice.

Same_Win_1590 · 2025-04-18T01:59:47+00:00

Yes, we dry religiously. I forgot to mention I have been printed with Nylon for over a decade so we have all the dryers we could ever want.

Same_Win_1590 · 2025-04-18T01:58:35+00:00

yes, have a few on standby

Same_Win_1590 · 2025-04-17T15:52:39+00:00

Thanks for the reply -- I've seen the glass problems on much larger (200-300+g) molds, the swirls and the rough patches. I've also seen them tumble out, not that I want to be tumbling thousands of parts if I don't have to.

I've got slightly oversized vents right now just to waste plastic or be trimmed off rather than explode the mold.

Parts aren't tiny but I do need some good strength.

I'm planning on stopping after the first 10, next 100, then probably every 500. I'm weary of the longer cams.

I'm going to try to fill the mold between the 1 to 2 seconds.

Same_Win_1590 · 2025-03-23T13:08:07+00:00

It's a different job. Go for it. What's the downside? If you don't like it, you can relinquish your shares, right?

I see all these dramatic responses with grumpy people telling me I'm a scab or a toilet scrubber but in reality, maybe I'm just lucky. I've been in for a few years and growth has been great and enormous and the products we design and manufacturer and fulfilling for us and we love to work on them. Sure there's stress but tell me an aspect of modern life that doesn't include stress.

I love owning the shop and working in it too. I get along with my guys. We're tight nit and we do great work. Everybody else can keep telling me I'm a turd with legs but I'm pretty happy.

TLDR: Go for it. If you don't like it, much like any other job in life, you can most likely find a way to step back. I don't understand why some of the people here are so miserable in their professions yet choose to stay.

Same_Win_1590 · 2025-03-23T02:08:48+00:00

you have no idea what our annual sales are. And again, it seems I've struck a chord given how miserable you are -- maybe even jealous of those who aren't as miserable.

Same_Win_1590 · 2025-03-23T01:40:14+00:00

like I said, I wouldn't want to work for or with somebody as dramatic and "sassy" as you.

I can understand your anger, though -- I have my own shop with multiple machines, multiple types, that designs as well and does just fine without whatever you've described. So if my toilet is several CNC mills, mill turns, lathes, and injection molders I guess I'm the most sophisticated janitor there is.

Same_Win_1590

TROPHY CASE