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Designs that do not fit in other categories. Previously named "New RepStraps and Post Mendel"
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, Here's the website where the "Cube Pro" is sold: Best Regards, Brian QuoteNitroFreak Hi Brian, ... snip..... Thanks Maxby reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, Thank you for correcting our cross sectional area measurements. It is an area and should have been listed in mm squared. We have fixed this on the site. I was going to research your other complaints but stopped as many of your comparisons are unrelated. For example, the "Cube Pro" hot-end information specifically states it is "Not for use with ABS, PLA or Nylon material." The J-Headby reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, A big difference here is that the J-Head 12 uses brass as opposed to aluminum for a heater block. I've only noticed, at most, a couple of degrees difference between the layer fan being on and not being on. Brass is heavier, and denser, than aluminum and has better thermal properties for a heater block than aluminum. Best Regards, Brian Quotedc42 Quotereifsnyderb We haven't seen a neby reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, The J-Head 12 will work with a 12mm mounting hole. With the J-Head 12 direct drive top, the top is flipped over to use a 12mm mounting hole. The J-Head 12 bowden top will usually need a washer. Looking at the effector, it looks like you'll also need an 8mm washer to go above the effector between the J-Head 12 bowden top and the effector itself. So I am sure it will fit. You'll alsoby reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, We haven't seen a need for a silicone sock as the brass heater block used in the J-Head 12 HiFlow maintains a very stable temperature. While there is some parasitic heat transfer between the heater block it is controlled by the use of an insulator that supports the heater block. In addition, there is also a "blast shield" between the heat break and the top of the heater block to insulatby reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, There is a thermal pic of it slightly under 1/2 way down the page at the following link: Best Regards, Brian QuoteEd3D Nice! I like. I would love to see some thermal camera pictures of it!by reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, The heat sink is very efficient and, due to the ultra thin heat break, very little heat makes it up to the cooling fins. We are thinking about adding water cooling in the future. Best Regards, Brian Quoteo_lampe It's pretty slim! Perfect for tool changing. The heatsink looks, like it would work with remote cooling. Just aim a stream of air to the bottom of the heatsink. Do you haveby reifsnyderb - For Sale
Re: The J-Head 12 HiFlow Has Been Released! - 5 years ago
Quoteobelisk79 What is the weight in grams of the new unit? Hello, The bowden version, which is slightly heavier, weighs in at 37 grams. Best Regards, Brianby reifsnyderb - For Sale
The J-Head 12 HiFlow Has Been Released! - 5 years ago
Hello, I am pleased to announce that the J-Head 12 HiFlow is now available at Improvements * Introducing the world's first Thermal Barrier supported heat break system, allowing us to harness the best of both worlds: an impossibly thin All Metal heat break that stops heat creep in its tracks -- while maintaining unparalleled strength. * New Multi-Top™ mounting system allows for mouby reifsnyderb - For Sale
Re: no hotend forum and e3d v6 and clones question - 6 years ago
Hello, It's been a while and I am getting by. It's good to see you are still around! Yes, the filament path needs to be perfect or else there will be problems. Poor machining will do it every time. Add in a poor design and there will be problems. The biggest issue, other than temperature range, with PTFE was making sure it has no flaws in the support tube that contains it. PTFE tends to "fby reifsnyderb - General
Re: no hotend forum and e3d v6 and clones question - 6 years ago
I think you were looking for Fabrication/Plastic Extruder Working Groupby reifsnyderb - General
Re: no hotend forum and e3d v6 and clones question - 6 years ago
In 2018 we shouldn't have hot-end jams. It's really sad. Chinese clones have set 3d printer hot-ends back ten years.by reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
Hello, No pic for release yet. When it's released there will be lots of pics. Quotejinx reifsnyderb just wondering if there a picture of the Jhead Mk12 yetby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
Hello! Actual print testing with the J-Head 12 is going very well! Even though it's a bowden extruder, 2mm retracts are working fine. Both ABS and PLA are now printing very nicely. Printing ABS at 60 mm/sec works fine at 235 degrees and with 2mm retracts. At 125 mm/sec, I increased the temperature to 245 degrees and 3mm retracts. Prints great! I have just started some serious testing witby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
The retractions made a big difference in oozing at the hot-end. Even so, I'll do more testing once it's on the printer. The bowden tube is made out of 4mm OD/ 2mm ID PTFE tubing. It's the same tubing I use for PTFE liners on J-Head Mk 8's and J-Head 10's. Quotedc42 Quotereifsnyderb The heat break section is 2mm. I tried 2mm retraction and 4mm retraction. No problems. The bowden tube is aboby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
The heat break section is 2mm. I tried 2mm retraction and 4mm retraction. No problems. The bowden tube is about a meter long. Other tests: Left to sit with PLA in for 30 minutes at 195 degrees without any retraction. No problem. Left to cool down with PLA in it, no retraction prior to cooldown, heat it back up to 295 degrees and extrude. No problem. Retract 2mm, at 295 degrees, and waitby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
Static testing continues with the new J-Head. There was only one failure. It failed to jam with PLA. Full print tests to commence in the near future....by reifsnyderb - General
Re: E3D v6 clone - 6 years ago
This hot-end looks like what happens when an e3d clone and a hexagon are left alone for too long without a chaperone. They still have't figured out where to properly mount a thermistor, either.by reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
I'll be posing a picture of the second revision of the prototype soon. Then you'll see. QuoteTrakyan I'm having trouble picturing how the heater block, heatbreak and heatsink go together.by reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
There is no set screw to hold the heat break in place. The entire part that contains the heat break is one machined piece and is held in place within the brass heat block. The tiny heatsink is highly effective due to the heat break design. Practically any fan can be used for cooling. Best Regards, Brian QuoteTrakyan 0.25 mm walls and a set screw to hold it in place? You'd need to be a surby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
Well, if you are interested in a cast chinese knock-off of dubious quality, yes, around $4 or so with free shipping. QuoteMechaBits Ok, Ok $4 must have gone up since i last looked.by reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
Hello, The part with the heat break isn't present in these pictures. However, the heat break has a wall thickness of about 0.25mm. So there is very little heat conduction up to the heat sink. Quotejinx will the Mk12 have the grub screws holding the heat break into the heat sink ( think that a nice feature to bring in from the hexagon). NO heat break! kind of hoping to see a chimera style brby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
The aluminum piece above the brass is the heat sink for the J-Head Mk 12. Quotejinx like that brass work,, but whats the stubby piece next to the threadingby reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
Not the best pic, but here is the heater block.by reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
I just looked up the price and e3d wants $20 for a Volcano heat block. I am not sure where you got your prices at. The center part is the heat sink. The E3d shown is a real V5 and the Hexagon is real as well. No knock-off parts shown. Brian QuoteMechaBits But a Volcano heatblock is only $1, Looks more like a copy of a cheap chinese copy of your Jhead - 1by reifsnyderb - General
Re: J-Head Mk 12 High Temperature Development - 6 years ago
The heater block is a vertical heater cartridge design. All new J-Heads will be using it. I'll post a picture of the heater block soon. Best Regards, Brian Quotejinx BUT,BUT that pic doesn't look like the heat block in the vid? ( appears more like the volcano in the vid )by reifsnyderb - General
J-Head Mk 12 High Temperature Development - 6 years ago
Hello, Development of the new J-Head Mk 12 is going great! After one more round of positive testing, we expect to have it available at Here is a picture of the J-Head Mk 12 heat sink between an e3d and hexagon hot-end. Latest video:by reifsnyderb - General
Re: NEW Genuine J-Heads are coming! - 6 years ago
Hello, People requested bullet points as to why Genuine J-Heads are the best hot-ends. Here goes! 1. Fast. Speeds over 200 mm/sec have been printed with a 0.4mm nozzle. 2. Light Weight. Total weight is under 30 grams and some models are under 20 grams. 3. Prints most filaments. Most filaments can be printed with a Genuine J-Head. 4. Prints at lower temperatures. Genuine J-Heads are more efficieby reifsnyderb - General
Re: NEW Genuine J-Heads are coming! - 6 years ago
Hello, We will update the listing. All J-Heads now come with heater cartridges. If somebody would like to use a heater resistor, we still have them and can provide them upon request. The main advantage of a heater resistor is that it's use takes up less space and saves just a little bit more weight than using a heater cartridge. A heater resistor is harder to wire and install, of course.by reifsnyderb - General