How to properly create hollow text letter suitable for 3D print? I am doing this project, where the objective is to print some hollow letters. I get to the following result with the spets that I took, where the objective is to make the letter 5 mm thick, with walls and bottom being 1 mm thick.

Steps I took:


I wrote a specific letter, resized it to proper size.
Then I apply extrude (5 mm) and set fill to BACK in the type settings.
I added Modifier (Solidify), with thickness 1 mm to the edges. Checked boxed: flip normals, even thickness and fill rim. The result so far was this.





Then i converted text to curves and then to mesh. I mirror the letter for printing.
I get a lot of intections (intersect face) and overhang face errors as seen below. 




What can I do to fix this and is there another way to get the same result that I don't know of?
To create a hollow letter :


create a new project and remove the cube
Add a text object
press TAB to enter Edit mode
change the text to the letter your want
press TAB to exit Edit Mode
press ALT + C and select "Mesh from curve/meta/surf/text"
press TAB to enter Edit mode
press A to select all vertices
press E to extrude to the alf of the final letter depth
press Shift + S and select "Cursor to selected"
press X to delete faces
press TAB to exit edit mode
select menu "Object / Transform / Origin to 3D cursor"
add a solidify modifier
change the thickness
apply the solidify modifier
press TAB to enter edit mode
change the view to Front Ortho (5 1)
press Z to change to Wireframe display
press B and draw a border to select faces on the top of your letter

press X and select "Faces"
press Z to come back to Solid display
press TAB to exit Edit mode
add a mirror modifier
select the proper option X/Y/Z (unselect X and select Z)
apply the mirror modifier