Racing car will be a good gift for your child. You can also print the wheel 4 times , the washer 8 times and the axles 2 times . Slide the axles into their holes and add the washers & the wheels; If the washers do not grip the axles, glue them to the axles or use some sticky tack to hold them in place.
Set the INFILL to 15 per cent . Add supports to the rear wing , air intakes , axles , axle holes and wheels .
If your slicer software can create tree-like supports, use these rather than linear supports. Carefully remove the supports especially under the wings , from axles and from their holes.
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