Page MenuHomeAleph Objects Inc

Determine Tool Kit for Kangaroo Paw
Open, NormalPublic


We need determine what components need to be in the tool kit for kangaroo paw.

suggested items:

Extra dishes
Extra needles
Greese for the plate
variety of syringes

Event Timeline

karrad created this task.Jun 21 2019, 1:27 PM
karrad triaged this task as Normal priority.
karrad created this object with edit policy "LulzBot Hardware Products (Project)".
karrad added a subscriber: tutley.

@tutley We would love some feedback suggestions for what might be required.

as discussed in NPI

grease for the plate
printed parts to hold a variety of syringes
Hex drivers set
a few dishes to get started
a small sample of alginate
25 and 35 mm gage needles

@Steven which syringe sizes did you recommend?

@tutley @samantha @anolen @west any other items you would like to see in there?

Suggested Tool Kit (in a grey and blue tool bag)

-Small amount of alginate and/or collagen and support material
-box of needles- 25 and 30 gauge
-allen wrench set
-vacumn grease
-small containters (salad dressing cups work well for this)
-pliers (to use on the belts)
-1 or 2 thumb screws
-Syringe - just need to decided on one or two? (
-SD card
-Power cord(s)
-USB cord

@Steven @tutley @karrad @Grant @Greggb @eBeardslee are we missing anything?

@DaniAO I believe we were also looking at a 20 gauge needle to make printing of more viscous and thermoset materials easier.

eBeardslee added a comment.EditedAug 23 2019, 11:00 AM

@DaniAO does the syringe include the needle? I would say one syringe and a few needles.

Historically we have always included everything needed to get printing. That being said should we include a petri dish? Along those same lines, do we need to include calcium chloride for mixing with the support material to print the alginate? Also, the storage of the alginate print required a certain solution, can't remember what though.

@karrad i tested the 20 gauge and it kind of works with the thinner stuff but definitely not the silicone. I think something like 18 or 16 gauge may be best for thermosets. probably 16

@eBeardslee the syringe does not, but we do have 25 and 30 gauge needled planned already.. just need to determine if we are sending the whole box or just a few.

The salad dress cups were suggested to print into as they are a good size, instead of a petri dish.

Not sure about the other items that you mentioned - @tutley your thoughts on that?

@eBeardslee the syringe does not include the needle. so having the small pack of needles should be good
@DaniAO i think we should only supply 1 of the glass syringes. they are very expensive..

@DaniAO Do you have a link to the salad dressing cups? This machine is a professional offering so I would recommend everything included supports that professional appearance. Also, customers often like to take / share pictures of the machine printing and final print when they first get it so I would like to do everything we can to make sure those pictures look good.

The salad cup isn't as professional looking and will probably get crunched in shipping, so I agree that isn't the best option.

We could do a 35 mm and 60 mm petri dish, but so the petri dishes are not tall enough to print the heart. Currently R&D is using the urine sample cups to do so.

Thoughts on sending the urine sample cup?

@tutley do you have a part number for the vacuum grease used to hold the dishes to the plate?

@DaniAO is the heart model one of the recommended first prints? I think both a petri and the urine sample cup would be enough to get started.

@eBeardslee We agree, we would just like to ensure there is no issue shipping a "urine cup" and looking unprofessional. (This is the only sterile item we could find that would fit a heart)

Works for me!

DaniAO added a subscriber: logan.EditedAug 27 2019, 3:33 PM

Current tool kit with part numbers (@logan for the BoM)

Grey and Blue Tool bag TL-MS0691
Long nose pilers - TL-HD0050
Ruler TL-HD0008
Tweezers TL-HD0049
Hex Set TL-HD0468
Urine Sample cup HD-MD0034
petri dish 35mm HD-MD0003
Vacuum Grease (Adam working on part number)
Needles 25 g - 50 PK HD-MD0024
Needles 30g- 50 pk HD-MD0020
Glass Syringe HD-MD0001
Alginate HD-MS0025
Extra Thumb screw HD-BT0258
life support material (don't have a part number yet)

Am I missing anything or is there ANYTHING else any one wants to add?

Edited with @tutley notes

Grant added a comment.Aug 27 2019, 4:33 PM

For Alphas this is fine for Betas we should look to replace the Urine cup.

just a semantics thing. we should probably stop calling the support "fresh material" as FRESH is the process and the material is "life support"

@eBeardslee you had mentioned you found another option instead of the urine sample cups? Can you post a link to it here and we can look into it more?

Another option, although not a cheap one, is a quartz container. There are likely better sources for these but here is an example on Alibaba

@DaniAO I've found quite a few options that might work. Just look up "Crystallizing Dish".

@logan HD-MD0035 for the vacuum grease


logan added a comment.Aug 29 2019, 1:25 PM

Also included in tool kit are PP-GP0454 through PP-GP0456, these are the three different sizes of syringe collars

@Grant @eBeardslee the concern is if we go with these bigger container, it will take more life support to fill. @tutley said it tool almost all 4 tubes of life support to fill the sample cups to then print the heart...

each life support tube makes about 35ml of life support. the urine sample cups are 90ml but that marking is below the flange for the lid, so to fill them was closer to 110ml which is almost all 4 tubes. They didnt need filled this high but our needle length is 1 inch and we would have had issues with the syringe hitting the walls of the dish if we only filled it halfway.

Ideally we would get a dish that is about 30mm deep (needle is 25.4mm long) and about 50mm wide and this would be about 60ml or 2 tubes would fill it and you could print the heart

DaniAO added a comment.EditedSep 4 2019, 8:19 AM

@Grant @eBeardslee thoughts on something like this

We will need to source it from somewhere else, but this give you an idea of what would work.

@DaniAO I think they look the part, my only question is the dish in the link big enough?

DaniAO added a comment.Sep 4 2019, 8:36 AM

@eBeardslee if you look high up in the conversation, @tutley says this will work

Well it works for me but will differ to @Grant for final sign off

Grant added a comment.Sep 4 2019, 10:24 AM

Dani - I like the Amazon 6 pack you sent over

We are getting a quote for pre-packaged Alcian Blue 8GX -A5268 in 1g samples for inclusion in the tool kit and for resale through the website. we will want to include this in the tool kit as well.

@DaniAO @karrad I'm pretty sure there is something that the Alginate has to be mixed with in addition to something that needs to me mixed into the storage solution. Do we need to include this? @Steven care to chime in?

The alginate mixture is 2% wt/volume alginate and deionized water. 2g alginate per 98ml deionized water.

The storage solution that you put the completed alginate print into is 1% wt/volume calcium chloride and filtered water. 1g calcium chloride per 98ml filtered water.

After a few hours the LifeSupport that was inside the print and any dumped into the storage container from the print dish will start to collect at the bottom of the container. The collected LifeSupport has to be slowly removed with a syringe and replaced with fresh 1% calcium chloride solution. You can use a 10ml BD luer syringe with a large needle to slowly remove the LifeSupport from the bottom of the storage container. It is best to do this in multiple steps; remove a small amount of LifeSupport then add back calcium chloride solution then remove more LifeSupport. Depending on the size and model features, this may take a few cycles over 1-2 days to get all of the LifeSupport out of the print and storage container.

After all of the gelatin has been filtered out of the storage solution you can long term store the alginate print by putting 1-2 drops of SigmaClean in the storage solution.

tutley added a comment.Sep 9 2019, 1:25 PM

@eBeardslee @Steven the alcian blue is .02g

@Steven With adding the dye, it sounds like it would make sense to include the calcium chloride in small qtys. I am not sure on the SigmaClean however, thoughts?

The SigmaClean is flammable so I think we should not include it. Otherwise, we would need to add flammable warnings to the printer packaging and I think would create shipping complexity.

emails sent to find smaller sizes of the calcium chloride and inquiring about reselling a Center fudge.