1

Topic: Pro Tip for Kapton Users: 100 sheets for ~$20

Hi guys,

I never got around to sharing this, but when I saw the price of Kapton in the Solidoodle store ($15 a sheet!!!!), and read that it should be replaced every few prints (or as it gets damaged) I thought this could end up costing more than filament!

Now, after a few months of bed-stick trouble my final, 100% works all the time solution is a combination of a glass bed, kapton tape on the glass, and an ABS slurry on the Kapton. I'm going to be building a modified bed soon so the heating pad is right against the glass to try and further reduce warping, but that's another story. The long and short is, I rely on Kapton and usually end up replacing it every 5-15 prints depending on the prints and how much they stick.

This is what I found: Bulk Kapton is CHEAP. On eBay I found a 100ft roll (aka 1000+ prints, even with screwed up applications), 200mm wide, for $21 CAD. That's right. The equivalent of 100 kapton squares for $21. Is it likely true Kapton brand tape? No. Does it work just fine (for me anyways)? Yes. Just search for 200mm 100ft Kapton on ebay and sort by price+shipping.

I was stoked by this discovery and I hope this helps save some people some money if their personal always-stick solution involves still using kapton tape!

2

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

I bought a roll a while ago, and it does work. Definitely off-brand, but it's the same stuff.
However, hairspray and glue is working much better for me at the moment so it's really only used as an interface for the bed and as a fairly effective tape for strapping cables to things...

SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi

3

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

Kapton tape.... ABS slurry.... Elmer's glue stick.... What is that for? wink
Glass, Hairspray, a good level bed and plenty of squish.  Turn off z-lift and run the temp about 108.  Problem solved wink

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

4

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

Octave sells that roll on Amazon for $45 incl shipping

Solidoodle 2 with Deluxe kit cover & glass bed with heater. and 2nd board SD2 used not 3rd and alum platform not installed yet still wood. also need cooling fan installed to board. use Repetier Host couple vers. Slic3r also have all free ware STL programs

5 (edited by dubbsd 2014-09-08 09:39:26)

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

i Bought  a sheet of 12" x 12" .005" kapton adhesive backed square from McMaster-Carr
it was a pain to install because it did not want to bend.
I have about 60 hours runtime on the tape and still no dings or tears.

Ultimaker S3.

6

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

wardjr wrote:

Kapton tape.... ABS slurry.... Elmer's glue stick.... What is that for? wink
Glass, Hairspray, a good level bed and plenty of squish.  Turn off z-lift and run the temp about 108.  Problem solved wink

Ward, you are obviously an expert so I find it confusing that you are not a believer in the elmer's glue stick!  Have you tried it?  It is so much nicer than using messy hair spray, and cheaper too.  I never got the hair spray to work on large prints but with the elmer's glue stick I can print something as big as the bed without even a hint or warp.

SD4 w/ RUMBA, E3D Volcano, all bearings, glass bed

7

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

mdrVB6 wrote:
wardjr wrote:

Kapton tape.... ABS slurry.... Elmer's glue stick.... What is that for? wink
Glass, Hairspray, a good level bed and plenty of squish.  Turn off z-lift and run the temp about 108.  Problem solved wink

Ward, you are obviously an expert so I find it confusing that you are not a believer in the elmer's glue stick!  Have you tried it?  It is so much nicer than using messy hair spray, and cheaper too.  I never got the hair spray to work on large prints but with the elmer's glue stick I can print something as big as the bed without even a hint or warp.

I don't know about the expert part smile  I have used the glue stick and find it is a little messy and makes parts too difficult to remove.  If I am being lazy and don't have my printer dialed in then I may (in a rush) use a little glue stick.  I do use the Glue stick for Nylon so I can appreciate why people like it so much. 
I have found that I rarely even have to use the hairspray unless I decide to clean the glass up then a fresh mist is needed.
I just don't have any warping or curling issues but I think most of that is helped along by the enclosure and the 500 watt bed heater.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

8

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

Hairspray and Elmer's glue have both worked so-so for me. The ABS slurry was a last resort. I believe I have issues with my bed heating properly (repetier says 115, but I believe the bed is actually still around 85-90) thanks to a warped bed and thick glass. I'm going to buy a new heating pad/thermistor soon and make my own bed where the glass would sit directly on the pad and hopefully that extra heat will make a huge difference. Maybe I could even print on bare glass...

9

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

There is no wrong way as long as it works for you smile

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

10

Re: Pro Tip for Kapton Users: 100 sheets for ~$20

+1

wardjr wrote:

There is no wrong way as long as it works for you smile

SD2 - Glass Bed, Fans on PCB and Y motor, Custom enclosure
Slicer - Simplify3D