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

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Like many other places in rural Italy (such as Sambuca in Sicily), the Sardinian village of Ollolai has an ongoing campaign to persuade outsiders to move there to revive the town’s fortunes. Focusing on the US election result is its latest strategy.

Despite all the houses going on offer, working visas to Italy are still very limited. Professional musicians Zeneba Bowers and Matt Walker gave up their Tennessee home in 2019 and moved to a village north of Rome after securing super-rare self-employed visas. Here’s how they did it.

California woman Chelsea Waite says it was “nothing less than a miracle” when she snagged the new digital nomad visa that launched in April 2024, although there have been few accounts of people getting hold of one. Here’s how it fell into place for the self-employed public relations professional.

For well-heeled Americans who set their sights beyond Italy, the options are greater. Interest in citizenship-by-investment “golden visas” has soared since the election, according to consultants who help the wealthy migrate.
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Parma ham is one of Italy’s tastiest exports, but fans of the cured delicacy should prepare themselves for potential disappointment as a crisis threatens supplies and drives up prices.

Over in the world of dairy, this year’s World Cheese Awards saw 4,786 cheeses from 47 countries assembled in the Portuguese city of Viseu to face judges’ scrutiny. The winning coagulated curd was a “voluptuous … match of protein and fat,” one juror said.

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The man, a foreign tourist in his 60s, was airlifted to a hospital in Tasmania’s state capital Hobart where he was in a critical condition, police said, adding they were contacting his family.

His 20-hour ordeal began at about 2:30pm on Friday when he became trapped while kayaking through rapids with a group on the Franklin River, police said in a statement.

Authorities received an emergency alert from the man’s smartwatch and dispatched rescue units and paramedics, police said, adding that the area’s remoteness added complexity to the rescue effort.

Set in the rugged landscape of the Franklin-Gordon Wild Rivers National Park in the island state, the powerful 129-kilometer- (80-mile-) long river is a popular spot for kayaking and rafting.

Rescuers made several unsuccessful attempts to extract the man between Friday evening and Saturday morning. When his condition deteriorated after so many hours partially submerged in the water, a decision was made in consultation with the man to amputate his leg, police said.

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With the kickoff temperature at 32 degrees Fahrenheit, the first half was a defensive tug-of-war between both teams.

Steelers kicker Chris Boswell opened the scoring with a 48-yard field goal in the second quarter. But on the ensuing possession, the Browns offense orchestrated a 12-play, 80-yard drive, capped off by a two-yard rushing touchdown by Chubb. Cleveland added a field goal before halftime to go into the locker room with a 10-3 lead.

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Just as both teams were settling in after halftime, the stadium turned into a winter wonderland as snow blanketed not only the field but fans, players and coaches alike.

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