Skip Navigation
InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)MA
Posts
5
Comments
16
Joined
2 yr. ago
Photography @lemmy.world
Marechan @lemmy.world

What is the purpose of the slot in the head of this tripod?

For context, this is a (rather old) Cullmann 2502. The head features a slot (30 x 5 mm) with two set screws on the front facing side (see other pictures). I thought it could be a mounting point for accessories but could not find any info online...

Front face with set screws:

Full tripod:

  • If you are in Europe, KameraStore is also quite nice (based in Finland). Bought my first DSLR with an extra lens and a few accessories for a nice price from there. Also, they inspect and test every piece of equipment (secondhand) so you have an added piece of mind.

  • Science Memes @mander.xyz
    Marechan @lemmy.world

    Using spectroscopy in biochemistry be like

  • Despite your extensive testing I would strongly advice against using it, due to things you might not be able to detect. A main concern is what we call leachables, molecules that can, well, leach from the material to the product (such as plastifiers, melting agents, etc). Since you are spraying the substance straight to your lungs, the danger level is maximum in terms of contaminants (the regulation regarding extractables and leachable actually started with Metered Dose Inhalers) and I doubt that a plastic designed to melt easily is really fit for this kind of applications. In the industry you would have to track the components of the raw materials and conduct several tests on each part of the device, to insure that it is below accepting doses. And then you would have to account for the sterility aspect of 3D prints...

    That being said, very nice design though!

    Edit: it is quite similar to why you should use 'microwave OK' plastic only (but in your lungs and with another kind of plastic)

  • I had to go through the regulations regarding plastic packaging and delivery systems of drugs for work and, yeah, you would have to go through a lot of testing and certifications for it to FDA compliant, especially for a inhaler.

  • Chemistry @mander.xyz
    Marechan @lemmy.world

    Solvay Group separation in two groups approved by shareholders

  • For this one, actually yes only a pocket knife (opinel folding knife) but now I have opted for a more ergonomic knife (shorter blade and larger handle) and I also have a hook blade for hollow forms such as spoons.

  • Thanks ! Mostly from my garden, from pruning trees. So far I also tried pine (too fibrous to my taste), horse chestnut (pretty much like hazel but harder) and a piece of bicentennial oak which dulled my blades in a eyeblink. Next up I have some thuya and beech to play with.

  • Whittling @sh.itjust.works
    Marechan @lemmy.world

    Second project so far - Barn Owl (Hazel - sanded, cherry stained)

    Belgium @lemmy.world
    Marechan @lemmy.world

    Do any of you have a recipe for Galette campinoises / Kempense galetten?

    The post about waffles reminded of the frustration of not finding any recipe online, is it a regional secret? I would love to make some at home.

    NB: more specifically the crispy (croquante ?) sort