Thomas Adapter from approx. 31mm to 34mm internally conical

Here is a first attempt at my adapter for the Thomas upholstery vacuum cleaner with an internal size of 34mm. It works with a 31mm vacuum cleaner pipe. I made the bore slightly conical on the inside.

I printed the whole thing with PETG.

However, I will also make a version with an intermediate web where the vacuum cleaner pipe is inserted from the outside. This reduces the risk of the pipe breaking.