Help needed building this expandable frame for moulds
SMaund
| Posted in General Discussion on
Hello all, I have been trying to design a frame that is expandable. It will be used as a mould to make resin sheets.
It needs to start at the size of 30cm x 10cm up to 3M x 1M and able to stop anywhere in between Height or Length.
The design I have included has a routered straight cuts in the longer sides of the frame, so that the two shorter lengths can slide along it. Although this will not allow me to adjust the Height.
The design isn’t flat like it is pictured, I’m not able to draw things in third dimension.
Please let me know if you know a way of doing this, or if I need to give more information, thank you.
Replies
All 4 parts would have slots most of their length. Each would slide the length of their slots, and bolts with wing nuts would lock them together. But the faces would not be flush. I'm not sure what you are trying to do with the frame, exactly.
You would need two one meter + sticks and two 3 meters + . Each stick is slotted all along it’s length except in the ends. Each stick has a bolt sticking out at one end that fits the slot and can slide and be clamped in position with a nut. They move like a rectangular aperture like this picture frame clamp. Or you could use these picture frame clamps with the nuts on both side of the corner blocks.
No slots needed. Each side meeting in a TEE joint with a Bessy or similar corner clamp holding the joint tight.
You are correct in that this type of design would meet all speculations request, but I would suggest embedding t-tracks into the boards would make it easier to adjust and hold in position without clamps. I do question being able to have one device that spans from 1 ft. to almost 10 ft. That strikes me as extremely unwieldy when working with smaller sizes.
This forum post is now archived. Commenting has been disabled