expiredLovelyCheetah | Staff posted Jul 23, 2024 11:03 PM
Item 1 of 8
Item 1 of 8
expiredLovelyCheetah | Staff posted Jul 23, 2024 11:03 PM
Black Widow Plastic Low Profile Car Ramps (Pair, 10,000lb Capacity)
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3" lift height is way too low to be of much use though. I have a bunch of low/sporty cars that i use plastic low-profile ramps on for routine maintenance, and they usually provide more like 6-8" of height. The peak height of a ramp isn't the main thing that makes low profile ramps work.... it's the length and angle of the slope which allows the front lip and other low parts of the vehicle to clear the ramp without hitting anything.
"Honey, look what I got you for a present! Can you change my oil?" 🕷️
Use jack stands (edit: with your ramps), everyone!
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Factors (temps of hotend/bed/chamber, too much part-cooling, wet filament from-factory or local humidity) that affect layer adhesion, brittle-ness, and all things compromising compressive strength (even shearing when tires claw up the ramp, depending on the layer orientation) - need to all work to trust that the home-brew ramp won't suddenly disintegrate.
Please backup with steel stands (definitely don't use a 3D-printed one), even if just an arm under the car.
Edit: And I hope that you were j/k, lol
Edit2 (for the curious few): I Forgot to expand on the dangers of hygroscopic plastics in terms of structural safety- both UV exposure _and moisture in 3D filaments lead to embrittlement - the reduction in compressive strength - and the threshold of collapse- is unknown even after testing, due to many dynamic variations during (subsequent) printings.
Those working on FDM (Fused Deposition Modeling) run dehydrators for several hours- even days- to ensure the filament is dry. While baking the final printed item will anneal to restore/increase strength, the baking temp needs to be precisely below the glass temperature (or else melts) for effective annealing.
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