8 votes

How do you heat a large glass print bed?

It will be very difficult to heat such a large bed, simply because of the enormous power required. Thomas Sanladerer recommends at least 0.6 W/cm² but notes 0.4 W/cm² also works (but takes "...
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8 votes

Will a glass bed warp as it is heated?

TL;DR Yes, glass warps when hot. Use a physical touch sensor and calibrate it out, or swap glass if it's "bad". The further you go into mechanical studies like 3d printing, mills, and ...
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8 votes
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Clamps / clips for glass on heatbed

How about the Ultimaker clips? Ultimaker uses 2 mm heat bed and 4 mm glass, that should be within reach by bending the clips a bit. They have quite a low profile/footprint. These clamps are ...
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7 votes
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How do you heat a large glass print bed?

Your best option may be to seek out a silicone rubber heating mat, using those terms for your web search. A quick search on my part shows many resources, some of which are known to the 3d printing ...
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7 votes

Why is glass a widely recommended option for the print bed?

I suggest to look at a similar question, but just the glass question here: Glass is a very smooth surface Glass shrinks when cooling to a degree it pops the print free on itself Glass is virtually ...
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6 votes

Clamps / clips for glass on heatbed

There are some clips similar to Trish's answer that aren't mounted but have a spring in them to apply pressure. Looks like they are called Swiss clips: Glass retaining clips – Swiss made:
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5 votes
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How do I remove a 3D print stuck to the glass build plate

It's useful to know what material you used for the print. Also, you've referenced the glass that broke in the vise, which implies a glass bed, but did you use any adhesive spray or other application? ...
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5 votes

Can I have a glass bed with only the center heated?

If you're using borosilicate glass (aka pyrex) then it won't crack. You can get squares of ~20x20 cheaply off aliexpress. If you're using window glass, picture frame class etc then you might have ...
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  • 51
5 votes
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How to level bed after applying glue stick for bed adhesion

How much glue do you put on it? I use PVA based spray, barely visible, very evenly spread and no problem whatsoever of sticking paper to the glue layer. Just level the bed as you normally would and ...
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5 votes
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Expansion in bottom skin after first layer

I think this is resolved. After looking at every conceivable source of over-extrusion and coming up negative, R.. GitHub STOP HELPING ICE suggested that it might be ...
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  • 347
4 votes

Clamps / clips for glass on heatbed

PLA has two problems that keep it from being usable for your purposes. First, it deforms under load. I've used printed C-clamps for various jobs; by the time I'm done, the clamp is generally warped ...
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  • 620
4 votes

How do you heat a large glass print bed?

I am heating my 1 meter by 1 meter plate (yes those numbers are correct) (in progress long term project) of tempered glass with a silicone heater bed I bought as overstock on ebay. Silicone Heating ...
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  • 3,003
4 votes
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What can cause Z height loss in the first few layers?

Do you have any “slop” on the right side (non motor) of the gantry? I’ve noticed that my gantry will settle on the right side and lag behind the motor driven - ever so slightly - when it starts to ...
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  • 56
3 votes
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Why could my opaque PETG be printing "transparent" in certain places?

Are you using Z-hop? Is there any play in the Z-axis direction? It appears that parts of the first layer are printed much thinner than other parts. What can happen if there is a little play in the Z-...
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3 votes

Is there any way to correct uneven bed temperature?

I had this exact issue with my Qidi X-Plus. After checking with a thermometer there was a spread of 9°C - enough to burn in (always the same) certain areas when printing at higher extremes of ...
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  • 162
3 votes
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FDM printer first layer infill swell upward

Had tried below and didn't work: Clean the bed Use a brand new glue stick Verify delta configuration and make sure z-plane is flat and parallel to bed Adjust z height to minimize the distance ...
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  • 243
3 votes
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Will a glass bed warp as it is heated?

Glass will not change its shape you can watch this interesting video: YouTube - Fix Your Bowed Glass Build Surface - CR-10 3D Printer . Or simply change your glass.
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  • 301
3 votes

Can I have a glass bed with only the center heated?

I purchased some very, very cheap thin glass from walmart (or home depot, cant remember for sure). Probably the thinnest kind available. Went through dozens of prints heating it up to 85C only at the ...
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3 votes

Clamps / clips for glass on heatbed

Let's analyze the problem: We have a 5.5 mm total thickness. We want to (semi)permanently affix the two layers together mechanically. The clips shall not be higher than about 0.2 mm to allow the ...
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3 votes

Clamps / clips for glass on heatbed

They might not work for every printer, but how about old fashioned bulldog clips: Attached at both end in the y-axis, they will avoid your Z-axis rods and frame (attached in the direction of the x-...
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  • 5,727
3 votes
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When installing a glass bed, what do you change?

The most common way to install a glass bed (assuming it's literally a piece of borosilicate glass) is with binder clips. Glass is an insulator, so you may need to adjust your bed temps by a few ...
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  • 591
3 votes

Expansion in bottom skin after first layer

OK, let's start with your pictures. Putting aside the expansion in the XY plane, layer 1 looks seriously underextruded (gaps between the lines, even) while layers 2 and 3 look severely overextruded. ...
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3 votes

Can't get bed to level properly

Step 1: stop using paper and get some feeler gauges. The gauge should be able to just barely pass under the HEATED nozzle. Step 2: What are you using for bed adhesion? I use Elmer's white glue. After ...
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  • 2,286
2 votes

Removeable Glass Bed vs. Removeable Springsteel Beds

In favor of glass: Smoother surface gives you a nicer bottom layer (though Kapton-layered steel is no slouch) More even, regular surface makes bed easier to level Easy to prep and clean More scratch-...
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  • 461
2 votes

Adhesion problem when printing calibration test

What can you say just looking at this picture? ->There are 2 obvious observations that can be drawn from your image. First, the bed does not seem to be levelled correctly, the right side (especially ...
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  • 31k
2 votes

Clamps / clips for glass on heatbed

I went to OfficeMax and got some Small clips. They are bigger than the Micro/Mini clips that ship with the printer and seem to fit just right on a glass plate. One of the Mini clips that shipped ...
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  • 121
2 votes

How do you heat a large glass print bed?

As @Tom pointed out, heating that much area is a pretty big deal. I would just add: You can't draw anywhere near that much power from the normal heatbed output on a PC board like RAMPs. You could, ...
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  • 3,181
2 votes
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New glass bed, should I glue it?

There are pro and cons for leaving the sticky protection baking paper on the slate of glass: pros (for not glueing it): Can be removed more easily in the future (the collant is not easy to remove, ...
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  • 31k
2 votes

Altering the print bed temperature at different layers

The actual problem you are facing is bed adhesion, the proposed solution (in your question) shouldn't be the preferred solution to get your parts to stick to the plate/glass as plastic shrinks as it ...
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  • 31k
2 votes

New glass bed, should I glue it?

Use Clips on either the left or the right. The aluminum might not be flat. Using clips or the adhesive will cause the glass to warp, defeating the point of using the glass.
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