# Build notes for high resolution optics

**URL:** <https://openflexure.discourse.group/t/build-notes-for-high-resolution-optics/526>\
**Category:** General\
**Created:** [31 May 2021 14:43 UTC](https://openflexure.discourse.group/t/build-notes-for-high-resolution-optics/526 "2021-05-31T14:43:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nieksand](https://yyz2.discourse-cdn.com/free1/user_avatar/openflexure.discourse.group/nieksand/32/515_2.png) [@nieksand](https://openflexure.discourse.group/u/nieksand)\
**Post date:** [31 May 2021 14:43 UTC](https://openflexure.discourse.group/t/build-notes-for-high-resolution-optics/526/1 "2021-05-31T14:43:21Z")

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I recently finished my build using high resolution optics.

Thank you to everyone who created this project.

I took a few notes on hiccups I ran into:

- I had trouble figuring out what to buy for the condenser lens. Eventually, I found a picture in the assembly instructions. It would help to have that picture here as well: [OpenFlexure Documentation](https://build.openflexure.org/openflexure-microscope/v6.1.5/docs/#/parts/optics/condenser_lens)

- My download of 3D printed parts was missing the Lens Tool and the Pi Camera 2 gripper.

- I used the new Pi Camera v2.1 rather than the v2 mentioned in instructions. It seems ok.

- The instructions for attaching the illumination dovetail omit the two holes that exist for brass nuts. To get the screws to reach the nuts, I had to omit the washers.

- There were no instructions for assembling the sample riser. I ended up using M3x8 screws.

- The parts list for the high resolutions optics asserts an M3x10 screw, but links to the parts details page for M3x8. I used an M3x8 and it seems to work ok: [OpenFlexure Documentation](https://build.openflexure.org/openflexure-microscope/v6.1.5/docs/#/2b_high_resolution_optics_module?id=parts)

- There are no instructions for the base of the microscope. It looks like the RPi 4 needs M2.5 screws and I have a bunch on order now. I’m guessing that the body and base attach using M3, but I have not confirmed.

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**Author:** ![r.w.bowman](https://yyz2.discourse-cdn.com/free1/user_avatar/openflexure.discourse.group/r.w.bowman/32/15_2.png) [@r.w.bowman](https://openflexure.discourse.group/u/r.w.bowman)\
**Post date:** [1 June 2021 08:13 UTC](https://openflexure.discourse.group/t/build-notes-for-high-resolution-optics/526/2 "2021-06-01T08:13:42Z")

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Hi @nieksand ,

thanks for that - I have a snagging list for the V6.1 instructions and we have a few changes queued up already for a 6.1.6 release; I will link to this post in that thread and hopefully we’ll be able to incorporate these.