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The Good, The Bad and The Ugly…

January 7th, 2012 2 comments

Ok, here goes:
The good… It works fantastic! You have seen the proof in the videos.
The Bad… The teflon lifts up and upon landing it is wrinkled. Needs to be restrained to the bottom ot the VAT.
The Ugly…The force is not to be reckoned with. The HDPA build base and the
silicone did not make a strong connection and with the viscosity of the 50ml of
ED3 and 50ml of ED4 ( 1600@25C and 1080@25C respectively ) it came undone:



Again don’t mess with “the force”: It cracked the corner of the 5mm glass
silicone VAT I made when experimenting with it.

Lessons learned and will be corrected in the next VATs and Build bases.

Categories: Build Base, Resin Tags: , ,

3D Printer DLP Printing with UV resin…

December 24th, 2011 11 comments

What can I say? The title pretty much gave it away…

It’s an early Christmas Present…

Questions will be partially answered after 27th and fully after New Years!

When its time for Build Base, It’s Build Base Time!

December 6th, 2011 No comments

Famous quote from a carpet commercial, but adapted…

So, time has come to build the base.
The most common plastic I was able to find was HDPE cutting board:

I cut 2 pieces:

5.5cm x 7cm and 7cm x 9cm:

Stack and clamp for drilling: with the L-bracket:

On the underside I needed to make a countersink for the M8 x 30 bolt head:

Then drill as many holes with an M6 and use an M8 on the side opposite of the countersink for the M8 (top) to create countersinks that will be filled with BLACK silicone and a 7cm x 9cm x 10mm glass will be:

It should end up looking like this from the glass side (bottom):

Let the HDPE and glass sandwich sit for 3~4 days without disturbing it. I know the silicone will not stick too well to HDPE, but it is only for testing.

I might have to remake the build base.

Time to drill the L-bracket for the two M8 bolts and the M3 bolts that will hold the build base to the THK Linear block:

I used M3 x 8mm slot bolts. I could not readily find Inbus (Allen head)  M3. All the local hardware shops stock from M4 up.

The end result will look like this:

 

Seems to be stuck well, but the question is : Will it come undone under the forces needed to lift the cured resin off the VAT?

We shall see.

 

 

 

Categories: Build Base Tags: , ,