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Grégoire Saunier

Grégoire Saunier

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Grégoire Saunier posts

Bear Frame 2.1 has been released!

Hi everyone,

Today is a big day, the final release of Bear 2.1 is now available!

https://github.com/gregsaun/prusa_i3_bear_upgrade/blob/master/README.md 

https://guides.bear-lab.com/c/Frame<...

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Final Bear 2.1 release is imminent

Dear Patrons,

The final release for Bear 2.1 is imminent and it is time to announce few things :)


New hardware

As announced in my previous post, the official Bear 2.1 kits will come with custom Bear t-nuts and screws ! 

In case you missed the post, those new t-nuts are stiffer, smaller, have a quality thread, are resistant against co...

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An update on Patreon.com sales tax

Hi everyone,

This is a bit boring post but important one. I promise to come with something nicer soon :)

Due  to new laws passing in several countries and US states, Patreon.com will be required to start charging sales tax on some pledges starting July 1st.

Patreon.com has created a customization tool allowing creators to optimize and so reduce the taxes. We can all thank...

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New t-nuts and screws

I am really happy to share this secret news with you :) . Those are the new t-nuts and screws that will start shipping with 2.1 Bear Upgrade frames.

The biggest problem we faced was to produce custom t-nuts at an acceptable price. We have tested a lots of different manufacturers and several in-house made versions until we could validate those. They are 100% made by LDO M...

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Thank you ... and some updates

Thank you

I really want to thank you again, Patrons, for your precious support during the development of BearMera. I really enjoyed doing it and big part was because of you! Thank you! <3

Some news from the development

  • We are working on a firmware for the BearMera to make it easier to use. It will be based on Prusa firmware 3.9.0.
  • I have ...

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Bear extruder and X axis (BearExxa) 1.0.0 release

Hi everyone, as you might have already seen the Bear extruder and X axis 1.0.0 have been release! To reduce the long "Bear extruder and X axis" name I have now set a shorter nickname called BearExxa.

Full release note: https://github.com/gregsaun/bear_extruder_and_x_axis/releases/ta...

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Project Overview

Hi Everyone,

We know that the Bear project is sometimes hard to follow and today we are announcing few things we have made to help with this.

One of the issue is that we share "development in progress" files (the  "dev branch"). We think it is important to get feedback during  development and to give access to anyone that want to get latest iterations. It also allows you t...

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Happy Easter

Little Easter egg game... There are 10 Lego (flat, square, 1x1 and red) on this picture, can you find them?

Happy Easter everyone. Stay home, safe and strong!


For those that are curious about my setup:

As I disassemble a lot this printer and can't carry too much weight (health issue) I am using heavy rails made for servers (with self locking mechanism). When the ...

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BearMera is now on Github (dev)

Hi everyone, the BearMera is finally available on my github (dev branch for now).

https://github.com/gregsaun/bear_extruder_and_x_axis/tree/dev/optional_parts/bear_hemera

Enjoy :-)

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Almost not sick anymore

Hi everyone, sorry for my absence of these last weeks, I have been sick and it is a very slow recovery. I am feeling better but still not 100%. As they don't test everyone in my country, I don't know if this is COVID or not, some symptoms are similar but not all.

I hope you guys are all safe and strong. I wish you can use your Bear unlike me that can't touch it to avoid contamination. I s...

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BearMera Updates

Just want to share some updates on what I did these last days on the BearMera. All those updates will be available soon on my Github.

In the mean time, you can find the new parts in attachment of this post (except the new shroud as I am still working on it).


Nozzle fan duct (shroud) - First picture:

I did a lot of testing on the shroud. Unfortunatel...

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Thank you and take care

Thank you everyone, I am very impressed by all your support! I wish you all the best and hope you are all fine and stay fine! Take care of you and your family. I send you tons of positive vibe! <3

It is really important to stay at home as much as possible to protect you and others. This is the best and easiest way to save life.


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New profile picture!

A week ago I was in the Swiss mountains (in Valais) for some rest. While  it was snowing outside we warmed the chalet with the fireplace. It was  the best place to start building a new profile picture! What do you  think? 

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Thank you!

We started March with more than 160 patrons here!!! Thank you, thank you, thank you for your support!!! A dream comes true!

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Bear Hemera - Fix homing for MK2S

I have updated the Bear Hemera zip file to fix homing position of MK2S (gcode file in config folder). I have also added an image of the nozzle and probe offsets.

The zip file is available on the original post "Bear Hemera Files Available" here : https://www.patreon.com/posts/34201760

Thanks to Tom and Orl...

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Bear Hemera Assembly Guides Update

I made several updates on the assembly guides this week for the Bear Hemera mount. Make sure to have a look at the latest version! 

Direct link -> https://guides.bear-lab.com/c/arka44xwf5jrhz33

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Bear Hemera Files Available

Update 2 April 2020: All files are now available on Github here: https://github.com/gregsaun/bear_extruder_and_x_axis/tree/dev/optional_parts/bear_hemera

Dear Patrons, please find attached to this page a zip file for the Bear Hemera. You will fi...

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Hemera print surface

So I have few good and some less good news :D

The good:

  • It prints!
  • Assembly on the frame went as excepted
  • Safety margins when extruder is full left or full right are perfect
  • Print surface is 240x205mm (the red perimeter on the image)
  • Print surface on MK2(S) might go up to 210mm on Y axis

Less good news:

  • On MK2.5(S) an...

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Hemera mount vs Bear extruder weight

Some of you have asked about the Hemera weight and here is a little comparison.

Hemera mount is at 570g and Bear extruder at 585g. The Bear extruder includes the filament sensor so I can say they are very very close.

However, the Hemera has most of the weight lower which might make it more stable compared to the Bear extruder with the stepper on top.

Note that the Bear extrude...

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Bear X Axis and Hemera news

I have published some part of the new Bear X axis in the dev branch. This includes the new X ends and new X carriage, you can find them here:
https://github.com/gregsaun/bear_extruder_and_x_axis/tree/dev/printed_parts

New Features of X ends and X carriage:

  • The...

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Bear Hemera coming soon as beta testing

Some news from the dev side for the Bear Hemera! It is going well and I will start printing with it very soon. Once the first prints are done and validated, I will share the files with all Patreons for a "beta test campaign".

The wiring is finally done (was not easy) and supports different type of wire thickness (like LDO nozzle fan, Pinda v1 vs Pinda v2, hotend fan with 2 or 3 wires and...

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Hemera Mount

More pictures of the Hemera mount for Bear X axis. Here is how the wiring of stepper and Pinda will be routed to the back.

Last picture show some work on the back to let warm air of the heatsink moving up.

Sorry for multi colors print, I am finishing some old filaments :D

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Bear X axis for E3D Hemera

You might have seen a teaser for the E3D Hemera I published today, here are some more details exclusively for you.


Current features:

  • All wires go to the back like Prusa and Bear
  • Will be compatible with stock Prusa and Bear 
  • Almost access to full bed surface (we should loose 8-10mm on X only)
  • New Bear X ends are needed (more details be...

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Bear Upgrade 2.1.0 RC1 is out!

 Link to the release note: https://github.com/gregsaun/prusa_i3_bear_upgrade/releases/tag/2.1.0-rc1

Link to the repository on GitHub: https://github.com/gregsaun/prusa_i3_bea...

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LCD cover published

Hey, I just pushed the LCD cover on Github and you can download it here:
https://github.com/gregsaun/prusa_i3_bear_upgrade/tree/dev/optional_parts/lcd_cover

I am not announcing it publicly yet, I want to finalize the release RC1 before doing it.

In case of,...

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Happy New Year 2020

A mega huge massive thank you dear Patrons for your support in 2019! Can't imagine how it would have been without your help for the previous decade.

I wish you a success, love, happiness and good health for 2020.

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Merry Christmas

I wish you a Merry Christmas to you, your family and your friends. Enjoy your holidays, eat well and have good talks.

Thank you very much for all your support, it is a precious help. I am very grateful to have you, you're the best!!!

🎅🥳🎄🎉🎁

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New LCD Cover

I am working since a moment on a new LCD cover.

  • New accurate design from scratch
  • Makes the frame shorter thanks to a bevel in front (3rd picture)
  • Eliminate vibrations by using 4 screws to mount the PCB
  • Easier to rotate LCD knob
  • Quicker to print and use less filament
  • Sleek design for better look
  • Design improved for best print qual...

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Details on linear rail development

You have probably seen my post about the linear rail development. Here are some more details exclusively for you dear Patrons.

Florian designed a special carriage to test different rails configuration you can see on those pictures. We tested two different rails from Igus, 20x60 V-Slot and CPC (similar to Hiwin quality). We also read lots of datasheet from other manufacturers and made som...

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#ThankYouPatrons

 Patreons, you are absolutely beautiful! I am working on the best project of my life and it would not be possible without your support, not at all! Thank you <3

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