Wall Wounted Claw Door Stopper

thingiverse

# Overview I needed a simple retention system to hold my door open using a wall mounted attachment. Designing a claw that could be glued to the wall (as I already had a strike plate there). # Details There's two models in the F3D file. The one displayed here is the prototype; the second model is the unfinished version in 3 components, designed to print in an orientation that allows for maximum strength (the horizontal grabby bits, the vertical grabby bits, and faceplate to cover them and make it look good). The uploaded STL is the unibody prototype model that uses 3mm walls; the pictured version uses 2mm walls and I think they're too thin, allowing it to flex too much. Like a "temporary" software hack made permanent, this model was largely to check whether the tolerance gaps in the model are too large, but ended up being good enough to be used as the final product. There are lots of parameters to adjust. The most interesting ones are likely to be: - *Claw_WallThickness*: Change how thick the claw part is - *MountingPlate_UpperWallThickness*: Change how thick the bottom portion is. There's two push-pull history components that need to be updated if you change this for aesthetic reasons. I don't think it matters too much. - *Claw_Airgap*: How much space is between the door handle and the prongs. Note that for most doors, it's not going to hit exactly perpendicular to the wall; you can either print a wedge to offset that, or increase this parameter. - *Claw_RevolveAngle*: Change how wide the claw part is. This will require some tweaking of the timeline features as it's partially suppressed due to the second model that this was designed around. - *Claw_CutoffAngle*: How far the claw "reaches" around the door handle. Increasing this increases the overhang, but decreasing it decreases the "grab" force holding the door handle in place. I've included the source files if you want to modify it. Possible modifications include: - Updating the model to have a countersunk screw head - Adding a wider plate at the base for more adhesion - Changing the angles of the prongs to grip more or less. - Changing the model of the door handle to suit your own personal door handle. # Installation 1. Prepare the wall surface for gluing (usually this means no paint). 1. Print the model 1. Put some double sided tape on the door handle. 1. Stick the model to the door handle like you'd want it to be when attached to the wall. 1. Apply glue to the back of the printed component. I used hot gun glue because it was within reach. 1. Open the door until it contacts the wall and give it a good, solid reinforced push against the wall so it connects. 1. Close the door while supporting the piece. Apply whatever you need to to hold it in place.