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

47071 Comments

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MattSam (not verified)

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"Ткацкий" (not verified)

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AndresBor (not verified)

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Mayovafe (not verified)

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Dennisnit (not verified)

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<p>Mixero is one of its kind and requires special mention. It supports Bitcoin cryptocurrency and is clearly unknown on the point of no logs policy. It requires a deposit of at least 0.01 BTC and the transaction fee is 2% along with the 0.0004 BTC network fee. It supports multiple addresses of up to 10 and requires confirmation of 1. No registration is required and it does not offer a referral program. However, the letter of guarantee is provided.</p><br><ul> <li><a href=https://yomix9.com/>Yomix</a> : Uses stealth pools to anonymize transactions </li> <li>Coinmize : Zero-log policy </li> <li>Mixero : Excellent customer support </li> <li>Coin Mixer : Fast payouts </li> <li>Bitcoin Mixer : It offers flexible transaction fees and a low minimum transaction limit</li> </ul><br><br><h2 id=menu1>1. Yomix - Uses stealth pools to anonymize transactions </h2><p>Yomix has a deposit requirement of 0.001 BTC and supports a maximum of 2 different addresses. Registration is not compulsory but there is a service charge of 4 – 5% on the amount being transferred. For those with a need for additional privacy, Yomix also accepts Bitcoins with a no log policy.How it works: unlike other mixers, this site cleans coins with bitcoins purchased by them on cryptocurrency exchanges. Yomix io examines purchased coins using a scoring system with innovative algorithms and the use of technologies such as blockchain volume analysis, cluster analysis, pollution analysis, etc. After that, you will receive your BTC back, divided into random parts, and even sent in different addresses, if necessary. The whole process takes about 6 hours. The mixer does not require registration and does not store any logs. After each mixing operation, a letter of guarantee is sent, and information about it is eliminated after 24 hours, ensuring complete anonymity. The service also provides round-the-clock technical support. MixTum io charges a flat fee of 5% of the transaction, as well as a network fee of 0.00015 BTC. The program has two versions – for regular browsers and Tor.Yomix is one of the best Bitcoin Tumbler services, that I’m stating based on my personal experiences and the positive reviews of other users on the Internet. It works both as a Bitcoin Tumbler, as well as a swapper, meaning you can clean your coins, and receive them in a different cryptocurrency as well which further adds to their anonymity. As a Bitcoin Tumbler, they let you set a custom service fee, the higher this fee is, the better your coins are anonymized. There’s a time-delay option as well which let’s you add an extra layer of protection by delaying your transaction by up to 24 hours, so you receive your coins not instantly but at a later time set by you. As of now, it supports the following coins: Bitcoin Ethereum Bitcoin Cash Litecoin The minimum fee of mixing coins for Bitcoin is 0.8% + 0.0008BTC / forwarding address. Note that there is a minimum transaction limit of 0.01BTC/transaction, and anything below that limit is still accepted but considered “donations” and hence isn’t returned to the senders. As for confirmation, it needs 1 confirmation before it cleans your Bitcoins. And the time needed for the whole process is generally instant, except when you’ve manually specified a time-delay. Also, obviously there also is a “Guarantee certificate” which helps you resolve any future conflicts and issues. It also features a “no logs policy” like all the other Bitcoin Tumbler services on this list, and automatically deletes your order history and all the other data after 24 hours. Well, this is just one of the many available Bitcoin Tumbler services, so let’s head over to the other available options.Straight off, Yomix is the only Bitcoin Tumbler we’ve ever crossed paths with which offers a “Free trial”! The free trial obviously doesn’t mean they’ll just send you free money; rather no fee or commission is charged for this free trial although it’s limited to, and is exclusive for 0.0001BTC tumbling only. Their process of acquiring the clean coins is quite unique, obtained from various stock exchanges such as DigiFinex, Cryptonex, Binance and so on; ensuring cleaner coins than some other questionable sources pertaining to their claimed check using a proprietary algorithm. In the background, a user’s money is first mixed in their pre-mixer with other coins; then sent to the stock exchanges for further mixing with other traders’ coins and then summoned back to be sent back to the users. The major flaw with the tumbler however is its lack of user-control, users have absolutely no control over the time-delays meaning you can’t specify the duration gap between the outputs rather it’s randomized between 1-6 hours. Distribution-control too can’t be controlled and the mixer sends randomized outputs to the addresses. The fee can’t be controlled by the users either and is again randomly set between 4-5%+ 0.00015 BTC network fee, truth be told it’s one of the highest tumbler fee we’ve ever seen. The minimum deposit limit is 0.0001 BTC and the maximum being 50BTC/ transaction.</p><p> Pros: <ul><li>Customizable mixing settings for better anonymity</li><li>Extensive FAQ section </li></ul></p> <h2 id=menu2>2. Coinmize - Zero-log policy </h2><p>Being honest, this isn’t the most feature-rich or control-rich Coinmize mixer that’s available out there. However, it still averages mixes over 700Bitcoin/day (claimed, not verified). The coins are claimed to be sourced from mining pools in the U.S, China and Europe. Obviously they do not keep any logs. Unfortunately, only 1 output address is allowed which is a bit of a downer. The time-delay can fully be set manually. It can be as low as 0 hours, or as high as 48 hours. Any other delay between this frame can be set using the provided slider. The fee isn’t randomized, neither is it user-controlled. It’s set at a solid 0.1% for all transactions. Accepts a minimum Bitcoin deposit of 0.010BTC. Maximum funds which can be currently mixed stand at 677 BTC. Number of required confirmations depend on the amount. Only 1 is required for mixes below 2.5BTC. For 25 BTC it needs 3 confirmations. 4 confirmations for 40BTC and 5 confirmations for 50 BTC are required respectively. Doesn’t require registrations.Mixing Bitcoins is made simpler with Coinmize. A mixer available both on the Clearnet and the Tor network. Offers complete control over the time-delays and fund-distribution. Charges a static fee of 0.3%. Maximum number of output addresses allowed is 10. Each address is charged an additional 0.0001BTC. Largest possible mix is 100 BTC, while smallest accepted deposit is 0.002 BTC. No registration required. Has a No Logs Policy, retains logs for 7-days by default. Although users can delete logs anytime before the 7-day period manually. Does provide Certificate of Origin. Also has an “Instant Dispatch” feature of delivering coins without any delay.Coinmize is another one that requires consideration. It supports Bitcoin cryptocurrency bearing no logs policy. It requires a minimum deposit of 0.001 BTC and the transaction fee is 4–5%. It supports multiple addresses of 2 or custom options and requires confirmation. No registration is required and it does not offer a referral program. Letter of guarantee is offered.Based on the experience of many users on the Internet, Coinmize is one of the leading Bitcoin tumblers that has ever appeared. This scrambler supports not only Bitcoins, but also other above-mentioned cryptocurrencies. Exactly this platform allows a user to exchange the coins, in other words to send one type of coins and get them back in another type of coins. This process even increases user’s anonymity. Time-delay feature helps to make a transaction untraceable, as it can be set up to 24 hours. There is a transaction fee of 0.0005 for each extra address.</p><p> Pros: <ul><li>Excellent customer support </li><li>It offers flexible transaction fees and a low minimum transaction limit</li></ul></p> <h2 id=menu3>3. Mixero - Excellent customer support </h2><p>Mixero bitcoin mixer is one of the few that allows large-volume transactions. The minimum size for a mixing operation is 0.001 BTC, any amount below this level is considered a donation and is not sent back to the client, there is no maximum transfer limit. The minimum commission is 0.5% with an additional fee of 0.0005 BTC for each incoming transaction. During the transaction, you will receive a letter of guarantee, as in all previously mentioned mixers.Mixero will be reliable and easy to use. It has been around for several years and is probably considered one of the most popular mixers on the darknet. Mixero charges a commission randomly in 1-3%, and also provides sending coins to 10 different addresses for increased anonymity. Due to randomization, withdrawal amounts turn out to be unpredictable, which again increases anonymity. BitBlender requires you to create an account to use the full suite of tools, but if you don’t want to register, this mixer offers a “quick blend” mode. When using the Quick Mix feature, you will be sent a code that identifies each individual operation to ensure that you do not receive any previously sent coins back. BitBlender provides two additional features. Auto-Withdrawal and Quick-Withdraw. Auto-Withdrawal will dramatically decrease your runtime if you have to constantly clean your coins. Quick Mix comes in handy for the casual user who doesn’t want to register.Mixero is another one of the mixer that deserves to top most Bitcoin mixer charts based. For starters its user-interface is one of the simplest and easiest to understand. Then, it supports as many as 10 additional addresses, which is the maximum most mixers on this list support. Its fee based on address, 0.0002 per address, no service fee. It has a no logs policy with a 7-day default retention of the logs for support and transaction-related issues, although users get to permanently and instantly delete the logs manually whenever they wish anytime before this 7-day auto clear period as well. Does provide distribution control for each individual address separately; time-delay too is available although it’s randomly set by the platform and not user-controlled. The minimum limit too is quite low at just 0.0005BTC while the maximum limit depends on the real-time reserves. Bottom line, apart from lower user-control on fee and time-delays it’s pretty perfect.What marks Mixero out from the crowd is the fact that this crypto mixer is able to process transactions for Bitcoin and Litecoin. There is a minimum deposit requirement for both Bitcoin and Litecoin. The site is able to support a maximum of 5 multiple addresses with confirmation required for all addresses. No site registration is required and there is a referral program in place. Additionally, Mixero can provide clients with a letter of guarantee.</p><p> Pros: <ul><li>No logs</li><li>Has impressive time delays</li></ul></p> <h2 id=menu4>4. Coin Mixer - Fast payouts </h2><p>As well as others, Coin Mixer has both a clear-web CryptoMixer. This mixing service is notable for accommodating extremely large-volume transactions. After public verification of their reserve of 2000 BTC there is no doubt that users can trust this mixing service and their cryprocurrencies will not be taken. The number of needed confirmations differs depending on the deposited amount, e.g. for depositing less that 25 BTC there is only 1 confirmation needed, in case of sending more than 1000 BTC a user needs to gather 5 confirmations. To use this platform, a Coin Mixer code needs to be created. A user should note it, so it is easy to use it next time. After entering a CryptoMixer code, users need to provide the output address or several of them and then set a time-delay feature. A delay time is determined automatically and a user can modify it if needed. A service fee can be also selected from the table depending on the sent sum. Each transaction requires additional fee of 0.0005 BTC. Also, a calculator on the main page helps every user to see the amount of crypto money sent and got back after mixing.Coin Mixer will be reliable and easy to use. It has been around for several years and is probably considered one of the most popular mixers on the darknet. Coin Mixer charges a commission randomly in 1-3%, and also provides sending coins to 10 different addresses for increased anonymity. Due to randomization, withdrawal amounts turn out to be unpredictable, which again increases anonymity. BitBlender requires you to create an account to use the full suite of tools, but if you don’t want to register, this mixer offers a “quick blend” mode. When using the Quick Mix feature, you will be sent a code that identifies each individual operation to ensure that you do not receive any previously sent coins back. BitBlender provides two additional features. Auto-Withdrawal and Quick-Withdraw. Auto-Withdrawal will dramatically decrease your runtime if you have to constantly clean your coins. Quick Mix comes in handy for the casual user who doesn’t want to register.Coin Mixer is another one that requires consideration. It supports Bitcoin cryptocurrency bearing no logs policy. It requires a minimum deposit of 0.001 BTC and the transaction fee is 4–5%. It supports multiple addresses of 2 or custom options and requires confirmation. No registration is required and it does not offer a referral program. Letter of guarantee is offered.Coin Mixer is another simple yet trustworthy Bitcoin Tumbler service. And one of the primary differences it has compared to the other platforms on this list is that it can accommodate really “large volume transactions”. There is no maximum transaction limit as such, considering how their reserve is really huge and you’ll need to be a millionaire before you can run them out of funds. If any limit is breached, you are notified before you make the payment. The minimum transaction 0.001BTC, any amount lower than this is is considered a donation, like in the case of PriveCoin, and isn’t sent back to the customer. The minimum fee is 0.5%, with an additional 0.0005BTC for every deposited transaction. You can set a custom fee for added anonymity and they also provide a letter or guarantee like all the mentionable Bitcoin Tumblers out there.</p><p> Pros: <ul><li>Excellent customer support </li><li>It offers flexible transaction fees and a low minimum transaction limit</li></ul></p> <h2 id=menu5>5. Bitcoin Mixer - It offers flexible transaction fees and a low minimum transaction limit</h2><p>Another solid Bitcoin Tumbler option, Bitcoin Mixer requires a minimum deposit of 0.01 BTC to be made but makes up for this with a lower transaction fee of 2% coupled with a 0.0004 BTC network fee. Support for multiple addresses and customer options is provided with users required to provide confirmation for only 1 address. While there is no referral program available, Bitcoin Mixer does offer users with a letter of guarantee for their peace of mind.Another trustworthy mixer is Bitcoin Mixer which supports two cryptocurrencies with Ethereum to be added soon. The mixing process is quite typical and similar to the processes on other tumblers. It is possible to set a time-delay option up to 72 hours and a sender has an opportunity to split the transaction, so the funds are sent to several addresses. Thus, sender’s funds are more secured and untraceable.And last but not least, there is a coin mixer with a number of cryptocurrencies to tumbler named Bitcoin Mixer. At the moment, there are three currencies and Ethereum is going to be represented in future. This mixer offers a very simple user-interface, as well as the opportunity to have control over all steps of the mixing process. A user can select a delay not just by hours, but by the minute which is very useful. The tumbler gives the opportunity to use a calculator to understand the amount of money a user finally receives. The service fee is from 1 % to 5 % with fees for extra addresses (0.00045529 BTC, 0.01072904 LTC, and 0.00273174 BCH). Having funds from different resources helps the crypto mixer to keep user’s personal information undiscovered. This last mixer does not offer its users a Letter of Guarantee.Bitcoin Mixer runs on the Darknet and is one of the most popular Bitcoin toggle switches. This dark service uses new technology, it doesn’t just clean up your coins, you get brand new coins that have never been on the dark web. The cleaning process can take no more than 4 hours. To carry out cleaning on Helix in the basic version of Grams, you need to register, in the versions of Helix Light and Helix Market this is not necessary. If you still decide to use the Grams version, you will have to pay an entrance fee of 0.01 BTC. Helix has an additional feature (Auto-Helix) that allows you to specify which addresses your coins will be mixed with when they are credited to your account. Helix also enforces a “no log” policy, all logs are deleted automatically after 7 days or by the user immediately after completion of the output. Helix has a third party server not connected to Grams. A number of Bitcoin client programs that he uses are located on a completely separate server from Helix and Grams. Even if Grams is attacked or compromised, Helix will not be affected.</p><p> Pros: <ul><li>Uses stealth pools to anonymize transactions </li><li>Zero-logs of your transactions </li></ul></p>

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