Filament Splicer

Project cancelled, click here to read why
The idea for Filament Splicer was born about a month after our Ultimaker 3D Printer was build. As cool as 3D Printing is, printing in one color is boring.

Users of normal, single head FFF/FDM printers are stuck with single color unless they join filament pieces together to produce one multi-colored string. It is not very complicated but process is quite awkward and you will get fed up very quickly.

If you want to have proper, stable filament join you need to have right temperature on the tip of plastic when you connect pieces together. This is hard to achieve when you use some arbitrary heat source. You either underheat or overheat and burn the plastic. Using print head of your printer is best 'ad-hoc' solution but it leaves quite a mess on it, you cannot print when you splice and plastic which is in the head slowly gets burned while you take time to splice your string.

Then, of course there is issue with forming of the joint, carpet knife and fingers where our favorite tools for that job but it took quite a long time to form each joint.

We have had our share of failed prints due to broken joints / stuck filament and finally decided to create a device which will help to splice filament. Initial idea was to create fully automated unit: you place filament ends on copper block, close it, push the button and viola - you have your joint. That was the theory.... In practice this is impossible because PLA and ABS expand during heat-up and contract during cool down, this results in either no joint at all or bubble-filled mess.

Many headache filled days [Even best PLA is really nasty stuff when you breath it in for a while] later we dropped the idea and went for 'open' model with precisely manufactured grooves which help to quickly heat up, connect and form joints.

Thermal insulation was another challenge, we wanted to allow up to 260c temperature but nothing could properly insulate enclosure from hot copper block for prolonged period of time. Ceramic fiber thermal tape can take that heat but one needs a lot of it and then there is itching... Chinese tape is horrible and even best branded, made in USA [ThermoTec] tape is not flawless. We eventually gave up on ceramic fibre and went with PFTA [Teflon] plates. Since PFTA can be outright poisonous at high temperatures, we decided to use high quality - made in Europe material - this way we are sure that maximum temperature of 235c is well within safety limit.

Availability

Filament splicer can be pre-ordered via our campaign on Indiegogo, it is available as a DIY kit or fully assembled unit.

 

Assembled
Assembled
Kit
Kit

 

Open Source

Filament splicer blueprints are released under Creative Commons Attribution-NonCommercial 4.0 International License and can be downloaded from Thingiverse and Youmagine.

Tags: 
projects
filament splicer

57740 Comments

Anonymous

JacobTib (not verified)

on

Tue, 09/30/2025 - 17:08

Как я рада, что нашла ваш аккаунт! Благодаря посту про выходную доставку смогла заказать розы подруге на день рождения в воскресенье!
<a href=https://vk.com/wall-61709230_7292>доставка цветов томск на дом</a>

Anonymous

JacobTib (not verified)

on

Tue, 09/30/2025 - 17:08

Ваши видео с доставкой букетов дарят веру в человеческую доброту! Заказала розы мужу на 23 февраля - он был тронут!
<a href=https://t.me/cvetaevatomskru/290>заказ цветов томск с доставкой</a>

Anonymous

JacobTib (not verified)

on

Tue, 09/30/2025 - 17:09

Как я вовремя увидела вашу рекламу! Благодаря посту про срочную доставку смогла заказать розы мужу на годовщину в будний день!
<a href=https://2gis.ru/tomsk/geo/422741746604144>купить цветы томск</a>

Anonymous

DavidNains (not verified)

on

Tue, 09/30/2025 - 17:24

giri gratis Chicken Road casino Italia <a href=" https://sexbytes.elustsexblogs.com/?bmDomain=pharmalibrefrance.com&gid=4... ">giri gratis Chicken Road casino Italia</a> or recensione Chicken Road slot <a href=" http://georgiantheatre.ge/user/xulxfaakpd/ ">vincite e bonus gioco Chicken Road</a>
http://sc.devb.gov.hk/TuniS/pharmalibrefrance.com Chicken Road slot machine online or https://www.ixxxnxx.com/user/powumiwewz/videos giocare Chicken Road gratis o con soldi veri
[url=https://toolbarqueries.google.com.mx/url?sa=t&url=https://chickenroadslo... gratis Chicken Road casino Italia[/url] recensione Chicken Road slot and [url=https://wowanka.com/home.php?mod=space&uid=553513]giri gratis Chicken Road casino Italia[/url] Chicken Road slot machine online

Anonymous

NormanJef (not verified)

on

Tue, 09/30/2025 - 17:44

gioco Plinko mobile Italia <a href=" http://hlsw.org/ajax/news_slides/default.php?link=https://hollandapothee... ">gioco Plinko mobile Italia</a> and Plinko gioco a caduta palline <a href=" https://camcaps.to/user/uwrgyvcvto/videos ">scommesse Plinko online</a>
https://maps.google.dz/url?q=https://hollandapotheeknl.com Plinko gioco a caduta palline and http://umsr.fgpzq.online/home.php?mod=space&uid=130169 scommesse Plinko online
[url=http://nou-rau.uem.br/nou-rau/zeus/auth.php?back=http://intimapharmafran... Plinko con soldi veri[/url] Plinko RTP e strategie or [url=http://clubdetenisalbatera.es/user/nafsyzmfuc/]Plinko casino online Italia[/url] Plinko demo gratis

Pages

Add your comment

More information about text formats

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.