3d print fail

[stitchdup]

So this was printed back in late november. The paint is acrylic from warhammer. The resin is anycubic normal stuff. Its been in a box since late december and i went to use them the other day to find one had popped. It only happened to this one wheel and tyre. There has been some temprature flucuations over the last month so I have to assume that is the cause though the room it was in is pretty much a constant temp.

 

[my66s55]

It's generally caused by trapped resin inside. I print tires solid to prevent this.

[iamsuperdan]

Yup. 

 

If you print something hollow, but don't leave a hole somewhere in the print, that's going to happen.

I had the same issue with a couple of pieces. Hollowed them out to save resin, didn't place a hole or vent in the parts. 

Same results.

 

[OldNYJim]

Yep, same here...the stuff we print is (generally) so small, I gave up on printing anything hollow to save some resin.

Even with holes, I found it was tough to get the parts cleaned successfully so that they didn't keep weeping resin out of the holes...solid prints save me all that hassle.

[my66s55]

You can cure the interior of resin buy making a snake light. When I print hollow engine blocks, I make a hole in each and soak it in i.p.a. I make them wher a part eill cover them up. They don't have to be very large. 3/16 will do.

 

[ctruss53]

A lot of 3D print sellers sell the tires and wheels seperately to prevent this as well.  Iceman, for example, prints hollow tires, but he prints the tire seperate from the wheels so it can vent out through the opening where the wheel would be.

[IceMan Collections]

If one popped so will the rest, in time. 
You can try saving them by drilling three small holes to drain any uncured resin. Then wash in 91%+ alcohol. Use gloves to avoid getting the raw resin on your hands. While doing all this, keep parts away from direct sunlight. 

[stitchdup]

I've asked the designer to do the wheels and tyres seperately or solid so I'll see what they say. Just gonna chuck all these wheels out i think cos its only 4 sets I've printed. Its less than the cost of a pint of milk so not a big loss

[Chariots of Fire]

Resin castings from a mold make solid tires but it avoids what happened here.  I note also that the surface is real glossy.  A different type of 3D material might be in order.

[stitchdup]

1 hour ago, Chariots of Fire said:

Resin castings from a mold make solid tires but it avoids what happened here.  I note also that the surface is real glossy.  A different type of 3D material might be in order.

the glossy bits are wet resin from it going pop