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Old 06-16-2021, 12:34 AM   #141
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Originally Posted by Dadhawk View Post
I've seen the friction welding done, but it seems risky if its for relatively small pieces.

Ok Iíll ask the dumb question. If itís for joining two small pieces, why not print them as a single piece?


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Old 06-16-2021, 07:27 AM   #142
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Ok Iíll ask the dumb question. If itís for joining two small pieces, why not print them as a single piece?
Well small is a relative term.

This is primarily a question I'm asking for my son, who prints D&D characters for some of his friends or the beasts they will face (he is he dungeon master). He has a small area printer (a mid-tier Monoprice Mini that has a 4x4 or so print area). Some of the items he prints have tails and such that exceed the area of the printer so he prints those parts separately. He adds tabs and slots to facilitate but sometimes it is difficult to hold while the glue dries. I was thinking a "spot weld" in a couple of places would provide a better hold.
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Old 06-16-2021, 11:10 AM   #143
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Originally Posted by Dadhawk View Post
Well small is a relative term.

This is primarily a question I'm asking for my son, who prints D&D characters for some of his friends or the beasts they will face (he is he dungeon master). He has a small area printer (a mid-tier Monoprice Mini that has a 4x4 or so print area). Some of the items he prints have tails and such that exceed the area of the printer so he prints those parts separately. He adds tabs and slots to facilitate but sometimes it is difficult to hold while the glue dries. I was thinking a "spot weld" in a couple of places would provide a better hold.
I would print a blob/zit and a slot for the material to move in and melt it with a soldering iron if you're set on plastic spot welding.

Quickset epoxy is probably the easiest in this situation. You can also find a catalyst for CA (super glue) that instantly hardens it, but for a lasting hold it's best to let most of it air dry.
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Old 06-16-2021, 12:27 PM   #144
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Mortise and tenon and a few pegs to hold them in like timber frame construction.
Leave the pegs sticking out and it can be part of the story universe.
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Old 06-16-2021, 06:33 PM   #145
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Originally Posted by Dadhawk View Post
I've seen the friction welding done, but it seems risky if its for relatively small pieces.
Most thermoset plastics don't like being remelted. You may be able to get away with this with PLA, but anything else likely not.
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Old 06-17-2021, 01:30 AM   #146
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Most thermoset plastics don't like being remelted. You may be able to get away with this with PLA, but anything else likely not.
PC, ABS, PLA, PA are not thermoset plastics they are thermoplastic (thermosoft). You're thinking of urethanes, epoxy and silicone resins and other polymers. He should be perfectly fine with friction welding.

In fact the entire premise of FDM printing is based on heating, cooling and reheating polymer pellets into filaments and then final extrusion for printing.
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Old 06-17-2021, 02:23 AM   #147
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Originally Posted by RayRay88 View Post
PC, ABS, PLA, PA are not thermoset plastics they are thermoplastic (thermosoft). You're thinking of urethanes, epoxy and silicone resins and other polymers. He should be perfectly fine with friction welding.

In fact the entire premise of FDM printing is based on heating, cooling and reheating polymer pellets into filaments and then final extrusion for printing.
Thanks for the correction. I thought all PA was thermset. We have a part made out of PA6 and the vendor told me it can't be recycled because it is thermoset and can not be remelted. Same with a part I used to have made out of ABS.
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Old 06-17-2021, 11:52 AM   #148
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Thanks for the correction. I thought all PA was thermset. We have a part made out of PA6 and the vendor told me it can't be recycled because it is thermoset and can not be remelted. Same with a part I used to have made out of ABS.
Yeah I'm not sure why they would tell you that. Maybe because PA is typically not accepted by many general recycling programs, I know here in Toronto, the weekly pick up by the city won't take it and ask you throw it in the garbage.

There are industrial recyclers that can take it but rare, and unless you're pumping out tons of it, probably not financially worth it.

There's also bio PA polymer powders and filaments coming on the market, but they have a while to go to be validated before end use in auto/aerospace/medical markets.
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Old 08-13-2021, 12:20 AM   #149
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https://www.thingiverse.com/thing:4931277
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Old 08-14-2021, 02:18 PM   #150
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Thats sick!! Any chance of making one with three holes for gauges instead of just the large opening?
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Old 08-14-2021, 07:58 PM   #151
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Thats sick!! Any chance of making one with three holes for gauges instead of just the large opening?
i can make one, it shouldn't be too difficult. I just got home from a surgery so I dont really have anything to do for the whole week lol

max diameter of holes would be 34.5mm. let me know what diameter holes you're needing

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Old 08-14-2021, 10:28 PM   #152
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i can make one, it shouldn't be too difficult. I just got home from a surgery so I dont really have anything to do for the whole week lol

max diameter of holes would be 34.5mm. let me know what diameter holes you're needing
Hmm the smallest gauges usually run like 52mm, I guess it could be possible if the face was extended out more. So maybe something like this but clipped into the oem spot?

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Old 08-14-2021, 10:39 PM   #153
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I'll work on it tonight and see what i can come up with.
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Old 08-18-2021, 05:49 PM   #154
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Hmm the smallest gauges usually run like 52mm, I guess it could be possible if the face was extended out more. So maybe something like this but clipped into the oem spot?
https://www.thingiverse.com/thing:4935799
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