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Build Your Own SLA/SLS A forum dedicated to helping you build your own SLA/SLS-based 3d printer 2016-05-02T21:43:21-04:00 https://www.buildyourownsla.com/forum/feed.php?f=19&t=2808 2016-05-02T21:43:21-04:00 2016-05-02T21:43:21-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=14668#p14668 <![CDATA[Re: FEP vat for the LittleRP?]]> Statistics: Posted by bminie — Mon May 02, 2016 9:43 pm

]]> 2015-09-02T23:54:45-04:00 2015-09-02T23:54:45-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=12175#p12175 <![CDATA[Re: FEP vat for the LittleRP?]]>
Like others I found the FEP vat simple to install and focus - a great design.

I am curious if anyone has been using the close up lenses as recommended by HL. I am using an P1500 with the projector mounted at the second holes as this was the best position for the petri. By moving the build plane further from the projector, the projected image of course is enlarged so when I use the FEP vat it is (roughly) 25% larger.

My thought is that to make the changeover between vats reasonably efficient, I would install a closeup lens. It is much easier to remove this and swap the vat when swapping to a petri.

It would be good to know if anyone has done this or something similar

Statistics: Posted by brochr — Wed Sep 02, 2015 11:54 pm

]]> 2015-08-18T08:50:42-04:00 2015-08-18T08:50:42-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11861#p11861 <![CDATA[Re: FEP vat for the LittleRP?]]>
Having it sit higher up than the original petri's made focussing the projector even easier - I actually had some downfocus / zoom room due to the added distance. Result!

Going to run a calibration block through it - the deep black F2D is a bit of an unknown quantity given the changes to the VAT affecting cure times and lift speeds and such, so I'll be flying blind... wish me luck!

Statistics: Posted by Wonderdog — Tue Aug 18, 2015 8:50 am

]]> 2015-08-17T04:08:05-04:00 2015-08-17T04:08:05-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11833#p11833 <![CDATA[Re: FEP vat for the LittleRP?]]> Statistics: Posted by lab — Mon Aug 17, 2015 4:08 am

]]> 2015-08-16T23:04:27-04:00 2015-08-16T23:04:27-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11830#p11830 <![CDATA[Re: FEP vat for the LittleRP?]]> Statistics: Posted by EtherBunny — Sun Aug 16, 2015 11:04 pm

]]> 2015-08-14T11:35:01-04:00 2015-08-14T11:35:01-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11813#p11813 <![CDATA[Re: FEP vat for the LittleRP?]]> Statistics: Posted by sgraber — Fri Aug 14, 2015 11:35 am

]]> 2015-08-13T16:27:12-04:00 2015-08-13T16:27:12-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11792#p11792 <![CDATA[Re: FEP vat for the LittleRP?]]> Drain resin
Rinse with dish soap detergent (breaks up resin like oil on a pan)
- I use a gloved finger to work in soap (no abrasive cloth)
Rinse with water
Dry with compressed air

Statistics: Posted by dangre — Thu Aug 13, 2015 4:27 pm

]]> 2015-08-13T16:07:24-04:00 2015-08-13T16:07:24-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11791#p11791 <![CDATA[Re: FEP vat for the LittleRP?]]>
Anyone got any advice on cleaning the FEP vat between uses?

Statistics: Posted by Wonderdog — Thu Aug 13, 2015 4:07 pm

]]> 2015-08-07T19:43:39-04:00 2015-08-07T19:43:39-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11620#p11620 <![CDATA[Re: FEP vat for the LittleRP?]]>
How long is the FEP likely to last? I bought 4 sets of film and gaskets...

Statistics: Posted by Wonderdog — Fri Aug 07, 2015 7:43 pm

]]> 2015-08-07T11:29:45-04:00 2015-08-07T11:29:45-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11611#p11611 <![CDATA[Re: FEP vat for the LittleRP?]]> As previously mentioned, the base of the vat being further off the baseplate makes for a larger build area than the petri dishes and a corresponding loss of resolution. In my case I've gone from about 32u x/y to 39u x/y, which is still probably good enough for my needs.

Statistics: Posted by ps_bond — Fri Aug 07, 2015 11:29 am

]]> 2015-08-07T11:12:14-04:00 2015-08-07T11:12:14-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11610#p11610 <![CDATA[Re: FEP vat for the LittleRP?]]>
#Wonderdog

Statistics: Posted by Wonderdog — Fri Aug 07, 2015 11:12 am

]]> 2015-08-05T12:51:09-04:00 2015-08-05T12:51:09-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11555#p11555 <![CDATA[Re: FEP vat for the LittleRP?]]>
Thanks Shane - bloody fast response!

Of course, it might also have helped had I noticed the cal block wasn't actually on the base of the build - seems I've been getting away with squashing the PDMS... 10 layers @ 7700ms, first one was blank but I hadn't noticed.

I can see the FEP film releasing the print, so that looks like it's solved it; thanks again.

Statistics: Posted by ps_bond — Wed Aug 05, 2015 12:51 pm

]]> 2015-08-05T12:49:23-04:00 2015-08-05T12:49:23-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11554#p11554 <![CDATA[Re: FEP vat for the LittleRP?]]>
Expose the very first layer for a very long time. I've done up to a minute on my very first layer. The FEP can handle this btw.

Shane

Statistics: Posted by sgraber — Wed Aug 05, 2015 12:49 pm

]]> 2015-08-05T12:46:21-04:00 2015-08-05T12:46:21-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11553#p11553 <![CDATA[Re: FEP vat for the LittleRP?]]>
Just set up my FEP vat from HTL - really nicely finished kit - and I'm having some issues getting the build to adhere to the build plate.
Best guess is either a) the build plate was rough enough to pull from PDMS but needs more abrasion with the FEP or
b) the FEP is stretching slightly when the build plate is pressed into it and so the first layers never make contact.

Anyone got any suggestions?

Statistics: Posted by ps_bond — Wed Aug 05, 2015 12:46 pm

]]> 2015-08-03T13:58:41-04:00 2015-08-03T13:58:41-04:00 https://www.buildyourownsla.com/forum/viewtopic.php?t=2808&p=11513#p11513 <![CDATA[Re: FEP vat for the LittleRP?]]>
The flex vat is also a little riskier because pin holes in the fep / damage etc. with the current design can result in result leaks. Having an acrylic window below the fep vat should solve this though.

Performance wise the fep vat should be superior in both terms of separation and speed of printing when printing objects that require a separation technique.

I see fep as preferred over the tilt option but not necessarily replacing the regular petris for small prints / ease of use. The image plane is also raised with the tilt / fep options so your x/y resolution will decrease a little but likely not noticeably.

Statistics: Posted by goopyplastic — Mon Aug 03, 2015 1:58 pm

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