Is it possible to see a model from 1 side of a part?

I really don't understand what your question is, but I guess you can change the Transparency of the part. Did you take an attempt? If not, please go ahead and do so. If so, then open the properties tab from the View tab. Then select the part in the explorer tab. The explorer tab open button is right next to the properties tab open button. After you have done both steps, go ahead and mess around with transparency. 0 is an opaque part, and 1 is a transparent part (It will still collide if CanCollide is true!)

Here is an example script:

local PartToEdit = Instance.new("Part", Workspace)
while true do --Creates a loop that will never end
	PartToEdit.Transparency = 1 --Sets the transparency to 1, which makes it invisible
	wait(1) --In a loop, at least 1 wait must be added. Otherwise, the script will break!
	PartToEdit.Transparency = 0 --Sets the transparency to 0, which makes it visible
	wait(1) --Unnecessary wait, just added to see the part go back and forth
end

Recap:

Step 1: Open Properties and Explorer tabs from the view tab.

Step 2: Select the part you want to change the transparency of in the Explorer.

Step 3: Change the transparency in the Properties tab.

Step 4 (Additional): Use a script to change the transparency of the part. This includes defining the part using a variable or create it using the Instance.new constructor function. Then, define the transparency by following the steps in the script provided.