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.

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filament splicer

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Police raided a forger’s workshop in Rome. They found dozens of pieces, including fake Picassos and Rembrandts
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Italian police have seized dozens of forged artworks attributed to famous artists such as Picasso and Rembrandt in what authorities have called a “clandestine painting laboratory.”

The investigation, led by the Carabinieri Command for the Protection of Cultural Heritage, the country’s arts and culture police, and coordinated with the Rome prosecutor’s office, started when authorities began searching for fraudulent works that had been put for sale online, according to a press release issued by the police.

Police said they found a total of 71 paintings, adding that the suspect was selling “hundreds of works of dubious authenticity” on sites like eBay and Catawiki.

Paintings attributed to the likes of Pablo Picasso and Rembrandt Harmenszoon van Rijn were among the works of art.

There were also forged pieces purporting to be from Mario Puccini, Giacomo Balla and Afro Basaldella, as well as several other celebrated artists.

The workshop where the paintings were being produced was located by police to a house in one of Rome’s northern neighbourhoods.

Authorities arrived to find a room set up solely for the production of counterfeit paintings. Among the materials seized by the police were hundreds of tubes of paint, brushes, easels, along with falsified gallery stamps and artist signatures.
The suspect, described by authorities as a “forger-restorer,” was even in possession of a typewriter and computer devices used to create paintings and falsify certificates of authenticity for the fraudulent pieces.

One tactic the suspect used was to collage over auction catalogues, replacing the painter’s original work with an image of the fake art he created, police said. This would give the appearance that the fake painting had been the real one all along.

Police also found various works still in the process of being made on the forger’s table bearing the signatures of different artists – leading them to believe that the suspect had created them recently.

This is far from the first time that Italian authorities have unearthed forged artworks. Established in 1969, the Carabinieri art police are specialized in combatting crimes relating to arts and culture.

In 2023, they recovered thousands of artifacts stolen from graves and archaeological digs.

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