Get the injection molding machine working

user8274 commented 5 years ago

[ ] The LED needs to removed and a new one soldered in.
[ ] We need to find out why plastic squashes out of the top when the piston is pushed in.
[ ] A new dial is needed to be made and attached. This could be 3d printed for example.
[ ] The housing for the LED and dial needs to be attached to the case
[ ] We need to find out why plastic doesn't come out of the nozzle when attempting to use. Is it blocked? If enough pressure is put on the piston some molten plastic leaks from around the top of the nozzle.

MatthewCroughan commented 5 years ago

@Sean-anotherone What is it that you said you were going to mill out at home? We should log these details here from now on.

user8274 commented 5 years ago

I have partially disassembled the machine to make it easier to work on. If anyone needs information on how it is assembled please feel free to contact me.

user8274 commented 5 years ago

As the nozzle is seemingly blocked, I have been trying to clean it. We took a sample of the residue and tested it with acetone. We also tested with fresh ABS. The fresh ABS dissolves as expected but the original residue and also new residue from heating fresh ABS would not dissolve. Based on this I think we cannot expects the usual solvents for feedstock plastics to work in cleaning the residue. We tried heating and running a shot but this did not work. I have also tried burning out the residue. This has removed residue but the nozzle still does not appear to be clear.

Sean-anotherone commented 5 years ago

Was referring to repairing the pellet loading chute for the machine - have done this and will bring it in on Thursday. The main cylinder requires cleaning up with a reamer and a larger piston making/fitting. I can make a piston but not until the cylinder has been remedied (need to know exact size). Sean

  From: MatthewCroughan <notifications@github.com>

To: DoESLiverpool/somebody-should somebody-should@noreply.github.com Cc: Sean Jarman sean.jarman@yahoo.co.uk; Mention mention@noreply.github.com Sent: Tuesday, 25 September 2018, 18:43 Subject: Re: [DoESLiverpool/somebody-should] Get the injection molding machine working (#928)

@Sean-anotherone What is it that you said you were going to mill out at home? We should log these details here from now on.— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

Sean-anotherone commented 5 years ago

I think the nozzle end will unscrew from the rest of the cylinder, will make it easier to unblock if this is the case.

  From: user8274 <notifications@github.com>

To: DoESLiverpool/somebody-should somebody-should@noreply.github.com Cc: Sean Jarman sean.jarman@yahoo.co.uk; Mention mention@noreply.github.com Sent: Tuesday, 25 September 2018, 19:25 Subject: Re: [DoESLiverpool/somebody-should] Get the injection molding machine working (#928)

As the nozzle is seemingly blocked, I have been trying to clean it. We took a sample of the residue and tested it with acetone. We also tested with fresh ABS. The fresh ABS dissolves as expected but the original residue and also new residue from heating fresh ABS would not dissolve. Based on this I think we cannot expects the usual solvents for feedstock plastics to work in cleaning the residue. We tried heating and running a shot but this did not work. I have also tried burning out the residue. This has removed residue but the nozzle still does not appear to be clear.— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

Sean-anotherone commented 5 years ago

I dropped off the loading chute this evening, it is repaired but a small spring or piece of elastic is required to hold the door closed. Good to see all the crud removed from inside the cylinder, has anyone tried to unscrew the end yet ? One possibility to unblock might be to remove the nozzle and give it a good blast with a blowlamp - that'll melt anything plasticy that's left inside !

The cylinder might not need reaming. Now it is mostly cleaned out I wonder if dressing it with some emery on a split-stick with an electric drill might be enough to restore some kind of finish?

johnmckerrell commented 5 years ago

Any chance someone can update this ticket if there's more up to date information?

Sean-anotherone commented 5 years ago

I have not done anything further than already stated above - The fit between the piston and cylinder is the main fault right now and I can make a new piston, but with the state of the cylinder bore the effort may be wasted. I don't have a reamer big enough to clean the bore so it's a bit of a chicken & egg situation right now.

Also, is there a mould with which to test the machine?

DoESsean commented 2 years ago

Talk to me about injection moulding and, more to the point, whether there has been any progress made on this.

Sean-anotherone commented 2 years ago

I fixed the hopper ages ago, but it needs much more work. I recall that there aren't any tools with it either (moulds) so was not much of a priority to get it up & running. Sean

On Tuesday, 7 June 2022, 12:17:47 BST, Seán Gleeson ***@***.***> wrote:

Talk to me about injection moulding and, more to the point, whether there has been any progress made on this.

— Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you were mentioned.Message ID: @.***>

MatthewCroughan commented 3 months ago

Wondering if @user8274 is still online, and whether they could contact me regarding Noctua fans. The person was anonymous, and it's likely they aren't online anymore, but thought I'd check!

DoESLiverpool / somebody-should

Get the injection molding machine working #928