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

44515 Comments

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Terrie Morin, 60, and her husband, Dave, were at the barber shop when they heard about a raging wildfire making headway toward their Camarillo home on Wednesday morning.

The couple were hosting two guests at the time, but because their guests worked late, Morin suspected they slept through the residence’s fire alarms.

“I run in the house, and I’m banging on the door, and they did not hear me. They were knocked out,” Morin told CNN. “Get the dog. Get out of here. You don’t have time, just get out!” she recalled telling them.
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Ten minutes later, Dave noticed sparks in their backyard. The temperature was also picking up.

“It was hot. It was so hot,” Morin recalled.

Dozens of homes in California’s Ventura County were set alight in a sweeping wildfire that burned through thousands of acres of land in just a matter of hours midweek –– prompting authorities to send more than 14,000 evacuation notices across the region.

The Mountain Fire began early Wednesday and was driven by winds gusting over 60 mph. The flames have seared through more than 20,485 acres of land, according to Cal Fire.

The families who evacuated at a moment’s notice, some who say they have now lost their homes, must deal with other losses that can also be devastating, from daily essentials like medications and shoes to meaningful possessions such as sculptures and artwork, to treasured keepsakes from the birth of a child or the life of a parent.

At least 132 properties have been destroyed by the fire, while 88 have been left damaged, Ventura County Fire Department officials said Thursday evening. Ten damage inspection teams have been deployed to inspect structures along the path of the blaze.

Ten people endured non-life-threatening injuries from the Mountain Fire, which are mostly related to smoke inhalation, Ventura County Sheriff Jim Fryhoff said.

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Terrie Morin, 60, and her husband, Dave, were at the barber shop when they heard about a raging wildfire making headway toward their Camarillo home on Wednesday morning.

The couple were hosting two guests at the time, but because their guests worked late, Morin suspected they slept through the residence’s fire alarms.

“I run in the house, and I’m banging on the door, and they did not hear me. They were knocked out,” Morin told CNN. “Get the dog. Get out of here. You don’t have time, just get out!” she recalled telling them.
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Ten minutes later, Dave noticed sparks in their backyard. The temperature was also picking up.

“It was hot. It was so hot,” Morin recalled.

Dozens of homes in California’s Ventura County were set alight in a sweeping wildfire that burned through thousands of acres of land in just a matter of hours midweek –– prompting authorities to send more than 14,000 evacuation notices across the region.

The Mountain Fire began early Wednesday and was driven by winds gusting over 60 mph. The flames have seared through more than 20,485 acres of land, according to Cal Fire.

The families who evacuated at a moment’s notice, some who say they have now lost their homes, must deal with other losses that can also be devastating, from daily essentials like medications and shoes to meaningful possessions such as sculptures and artwork, to treasured keepsakes from the birth of a child or the life of a parent.

At least 132 properties have been destroyed by the fire, while 88 have been left damaged, Ventura County Fire Department officials said Thursday evening. Ten damage inspection teams have been deployed to inspect structures along the path of the blaze.

Ten people endured non-life-threatening injuries from the Mountain Fire, which are mostly related to smoke inhalation, Ventura County Sheriff Jim Fryhoff said.

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