Posts made by klcjr89

The day has finally come! We have 'soft' launched yesterday and are now taking orders for blank plates and magnets!

https://subtle.design/collections/3d-printing

The Slice thermistor has extremely high resistance at low temperatures and will report as min temp on most firmwares using standard thermistor tables. The table linked here needs to be defined:

https://docs.google.com/spreadsheets/d/e/2PACX-1vTHfmSmnGNEuHzjCHEjkA9_DUgnCD9z5E_7Gk1BjUgBYEBtJ6Dlj3hhnFuhFeOfnIc_7zE69VS1tAbx/pubhtml

@bearer said in New bed, from scratch.:

I can't say I got very scientific about this, but seems the magnet doesn't care very much if there is air, cardboard or aluminium between it and the steel sheet. And even at 1mm gap a handfull magnets provide ample holding force (or so I would think)

But I've been told I can have the 120C/250F magnet sheet "smuggled" to me in a couple of months, so I'll skip trying to mill out pockets for magnets this time around. Mostly because the larger magnets would end up having the heating wire pass directly over them and not sure they would enjoy that despite being rated for 150C.

Used "704" to tack down the heating wire, clamping each row down to try and get a good thermal bond, covered it all with high temperature silicone, a layer 2mm ceramic wool and a sandwich of silicone, fiberglass and aluminium foil. Will see how durable it ends up being. Also put a 120C thermostat, a 150C thermal fuse and PE bond on it, hopefully that takes care of the health and safety checkboxes:)

6 minutes and some change to 20 to 100C, phone died while recording so not quite sure.

Did you check out our Kickstarter? We are offering 150º C magnet and PEI coated spring steel; might be a perfect fit for your bed!

https://www.kickstarter.com/projects/1536120962/pei-coated-flex-plate-system-for-3d-printers/

@devleon I got it new old stock, so wasn't too bad If the idea works, the manufacturer has volume price discounts!

@devleon The parts were very expensive, which always seems to be the case with any prototype project I undertake haha.

The heart of it is a transducer, or known as LVDT in the industry.

All of the parts have arrived for the sensor. If I can get everything designed and assembled, it will be a game changer!

Uncle Jessy made a video of the flex-plate yesterday https://www.youtube.com/watch?v=v6EGRMJmKo4

I am working on a sensor that measures in more than 2 axes and should eliminate all under and over extrusion issues for good. It even has the benefit of allowing a user to use random diameter filament without having to worry about issues.

Even good quality filament is far from consistent. It may be '1.75mm', but has an egg shaped cross section or non consistent cross section across the length of the spool.

This also doubles as a filament run out sensor.

@underdonesushi said in PEI coated flex-plate system:

@klcjr89 It would be a personal preference to not having the magnetic sheet 3M glued to the heated bed, but yes true. Awesome can't wait to see the next round, will that be kickstarter also?

Hopefully we won’t need a Kickstarter again. We’re just trying to raise capital to be able to fund mass production.

@underdonesushi

Larger sizes are coming in the future after we have capital. You also don’t need embedded magnets with the entire surface of the magnet sheet.

@martin1454

No plans for logo; it makes production much simpler and a more aesthetically pleasing product

Here are two new images I took today. One shows the beautiful, uniform texture of the coating, and the other is a MK52 sheet I also made today.

@martin1454 said in PEI coated flex-plate system:

@klcjr89 said in PEI coated flex-plate system:

What do you think of the texture?

I like it - a bit more rough texture than I anticipated, but it looks good As PuterPro said - I like it better than glass. Even tough glass looks good on that side, it stands to much out compared to the remaning 5 sides.

19 days to go and less than 50% backed makes a bit nervous/sad. Hope it comes through.

The texture is actually finer than the Prusa sheet

And yeah, I don't see why it wouldn't. The wham bam plate raised $30K on Kickstarter so I don't see why I wouldn't be able to. Geckotek raised $60K.

@puterpro said in PEI coated flex-plate system:

I'll jump in and say that although some like mirror like bottoms (there's always glass for that ...) I prefer this sort of texture.

For one thing that texture with all it's little hills and valleys is creating a hell of a good adhesion due to the tremendously improved surface area!

I've run PEI sheets for years and I always sand them with 320 grit to give it a better bite, still releases easily, this is even better.

This is a rockin' product you're offering, hope the KS goes well for you, not in the market myself (Wife is still in shock from the Duet and other upgrades to my CR-10S, no way she'd let me get this ... )

Awesome execution tho'!

Thank you for the positivity and thoughtful comments It's very much appreciated!

@martin1454 said in PEI coated flex-plate system:

@klcjr89 Perfect! - just what is was looking for

What do you think of the texture?

@martin1454 said in PEI coated flex-plate system:

@klcjr89 hope it will succeed

Also - Can you share an image of how the underside of a print looks when it is printed on the surface?

Will this image suffice?

@deckingman For PETG, I print the first layer at 25 mm/s, which is 50% of my normal printing speed of 50 mm/s.

@martin1454 said in PEI coated flex-plate system:

@klcjr89 hope it will succeed

Also - Can you share an image of how the underside of a print looks when it is printed on the surface?

There is a shot in the video that shows this, but I'll try to get a still image.

@deckingman said in PEI coated flex-plate system:

No criticising the product in any way but looking at the video in the first post, that first layer was being printed soooo slowly compared to what I'm used to. Is that normal for PEI? What sort of speeds do you guys print your first layers at?

That is slow motion filming, not slow printing

Update: we are now offering sizes up to 350mm and have lowered the costs of rewards! We have streamlined the reward tiers to make it less cluttered. You can also buy just a flex-plate now, whereas before we required the purchase of two at a time.