TonyM

I only work in 2D and have been using QCAD for a while after Dessault started charging for their previously free version.

I realise this does not answer your specific question but I have made similar clamps by cutting off a couple of turns of a suitable tension spring.

Quote from: JoThe problem when you are retired is there is not much time to go play as you thought there was going to be 

Jo

Isn't that the truth.

My workshop is currently in two rooms on the lower floor of a three storey house. The lower floor is half below and half above ground so has good daylight, is centrally heated so it's warm, and easy access.
I change footwear at the door so no chips walked through the house. The three floors are linked with an open staircase so there can be a problem with noise and/or fumes on the upper floors and my wife has a home office. If it weren't for the cost I would move to a purpose build outside.

You could use an inline lubricator either separate to regulator or combined like this Tailonz-Pneumatic-AFC2000-Compressor-Lubricator in Amazon.