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could you tell what modifications did you made?

Living the dream! great vid

Hi, I'm from Brazil. Could you make a pellet mold for an air rifle?

Interesting about the plastic on the plunger, been having that issue and glad to know why now.

Very nice finished mold! What software do you use to edit the tool path?

Thanks for the cutting specs! I am trying to do the same thing with a similar CNC machine.

I have been using this with my cnc. Defo gives you a direction to look into and confirm.

what did you put on the surface before machining ?

What model is your fiber laser?

Hows it going man! Would you be interested in making a small precision part? Im in the usa and am looking to work withsomeone to make a very small specialized plastic part. Thanks!

Spindle berapa watt?

good job sir

What is your spindle speed if i may ask. Im having a hard time with alu

Nice video, you seem to be getting a lot of chatter , it looks like your tool holder is very tiny, but it might be helfup to choke up on your tools as you are not going very deep. you may also bennefit from some sort of coolant system , even if its just using a soda bottle with some mineral oil or water with a hole cut in the cap . what type of aluminum are you milling here?

Stock spindle, 20k rpm upgrade, or router? Ive only done wood on mine, looking to make molds for my buster beagle mk3 now, any tips? Also, thanks for including your feeds and speeds...i feel like no one ever does!

Awesome! Thank you for making and sharing this.

Firstly, I am not master in this field. However, what I see is the heater band wire directly connect to port 1 and 2 (~220V) of the PID controller. My concern is whether we get electrick shock when touching to the heater band during the operation (I mean when the heater bands getting hotter to reach the set temperature value) ???

Thanks for the video! Hopefully you will make another video showing the mold in use and the finished product.

Hello, your machine is great, I'm building something similar. I would like to get some technical data on your pneumatic cylinder if possible.

ciao mi chiamo giuseppe .ti scrivo se mi puoi aiutare ho la stessa cnc e progamma.come posso fare aumentare la velocita di taglio mentre lavora la cnc 3018 perche e lenta

Very nice molds. If I may offer a piece of advice I would run single flute o cut bits. I have used the exact same 2 flute endmill from speetool and have found it sucks for any operation that has a plunging operation i.e. 2d contour or 2d pockets. The single flute will give you way less chatter and way cleaner cuts because it can evacuate chips much faster than a 2 or 3 flute endmill. I use the SpeTool O Flute UpCut 1/8" X 1/2" Carbide End Mill. On my carveking from millwright I run 40in/s with .022in DOC. My gantry is relatively stable but the plastic spindle clamp would seem to introduce a lower frequency and therefore I would recommend starting with a .07in DOC and 30in/s withe the single flute.

Very cool, how much did the upgrades cost from the original buster beagle machine. Also did you start with the Buster beagle MK3?

Tell us more about this machine please.

Came out great

How big is the shot for that mold?

I've never gotten anxiety as bad as I have with this video 😬 Great job though! The speed up noises are hard to take.

Man wow, this is great. I think I also will not be able toresist building a buster beagle :D How big of a injection I can make? I have a Auger that dispenses cofffe beans, I wanted to resin 3d print a mold for it, do I think I can inject it with Buster Beagle? Size is like an auger of 60mm radius, 150mm height

Juat dont let the AI control the machine. Then we get into the self-replication realm. In all seriousness, thanks for the updates on your process.

When I was making a ton of plastic injected parts on a home brew injection machine I quickly learned that the best case was only injecting a small fraction of the total barrel volume. Say 20-25%. So each injection is only injecting the bottom 20% of the barrel, which means it has had 4-5 injection cycles to fully melt. If you need to make many 100s Of parts, don’t heat the very top so the pellets there don’t melt and clog up the piston, and inject as little of the barrel as possible each cycle. If I was making 20cc parts I’d have a barrel volume of 120cc even if that meant my injector was 24” long! And the piston doesn’t even need to sweep the whole thing. 35% at most to allow for compaction. Nice work here, by the way!

Incredible work! Must have taken a lot of tinkering. How many grams can you inject now?

Very Nice! 💪👍

Pick the right anti-seize too. For high temperatures you want nickel based anti-seize and you want bayonet mount thermocouples in brass mounts (brass is easy to drill out if it breaks). Thermocouples have a six to twenty four month life span (due to chemical drift on type K thermocouples).

Anti-sieze. Use a small amount on the threads and you won't have that problem.

Keep me posted on your new brass piston/plunger. I would assume it does need to be relatively snug but now air tight. The unmelted resin will work with the piston/plunger by forcing the lower (melted) resin out of the nozzle. Always keep the top portion of the barrel slightly colder than the bottom.

You have to be careful though. The AI will rarely respond with "Not sure" or "Don't know", instead it will very confidently provide wrong information

Thanx

Awesome video! What bits did you use?

How important are bleeder holes for the air to be purged out when the plastic is injected? Is that ever an issue with PP?

The buster beagle used a pneumatic injector which has low pressure about 1,500 PSI.

Awesome video!

Fantastic setup! My MK 3 pieces arrive today and I’m excited to get working on it.

Incredible! I have a 3020 and I want to get into injection mold making. Thanks for documenting your work.

Very promising result! What spindle do you have?

Which software are you using?

Is that with the stock spindle?

awesome! spinrate, feedrate, doc?

Very cool! Looks like the machine is very capable!. Would like to see you using the mold later on.

any instructions on your conversion? Looks great BTW.. Would love to do something similar with mine